Remove trailing spaces in analyzer_experimental

pkg/analyzer_experimental/lib/src/generated/html.dart

Index: pkg/analyzer_experimental/lib/src/generated/html.dart
diff --git a/pkg/analyzer_experimental/lib/src/generated/html.dart b/pkg/analyzer_experimental/lib/src/generated/html.dart
index 0de0d5bb6fcfb6da24fe9ad9db545a1aff3e64ed..206f55239e358d4b55aa05700f63fa7f80f8bd4c 100644
--- a/pkg/analyzer_experimental/lib/src/generated/html.dart
+++ b/pkg/analyzer_experimental/lib/src/generated/html.dart
@@ -1,8 +1,6 @@
 // This code was auto-generated, is not intended to be edited, and is subject to
 // significant change. Please see the README file for more information.
-
 library engine.html;
-
 import 'dart:collection';
 import 'java_core.dart';
 import 'java_engine.dart';
@@ -10,52 +8,50 @@ import 'source.dart';
 import 'error.dart';
 import 'instrumentation.dart';
 import 'element.dart' show HtmlElementImpl;
-
-
 /**
  * Instances of the class {@code Token} represent a token that was scanned from the input. Each
  * token knows which token follows it, acting as the head of a linked list of tokens.
  * @coverage dart.engine.html
  */
 class Token {
-  
+
   /**
    * The offset from the beginning of the file to the first character in the token.
    */
   int _offset = 0;
-  
+
   /**
    * The previous token in the token stream.
    */
   Token _previous;
-  
+
   /**
    * The next token in the token stream.
    */
   Token _next;
-  
+
   /**
    * The type of the token.
    */
   TokenType _type;
-  
+
   /**
    * The lexeme represented by this token.
    */
   String _value;
-  
+
   /**
    * Initialize a newly created token.
    * @param type the token type (not {@code null})
    * @param offset the offset from the beginning of the file to the first character in the token
    */
   Token.con1(TokenType type, int offset) {
-    _jtd_constructor_154_impl(type, offset);
+    _jtd_constructor_155_impl(type, offset);
   }
-  _jtd_constructor_154_impl(TokenType type, int offset) {
-    _jtd_constructor_155_impl(type, offset, type.lexeme);
+  _jtd_constructor_155_impl(TokenType type, int offset) {
+    _jtd_constructor_156_impl(type, offset, type.lexeme);
   }
-  
+
   /**
    * Initialize a newly created token.
    * @param type the token type (not {@code null})
@@ -63,14 +59,14 @@ class Token {
    * @param value the lexeme represented by this token (not {@code null})
    */
   Token.con2(TokenType type2, int offset2, String value2) {
-    _jtd_constructor_155_impl(type2, offset2, value2);
+    _jtd_constructor_156_impl(type2, offset2, value2);
   }
-  _jtd_constructor_155_impl(TokenType type2, int offset2, String value2) {
+  _jtd_constructor_156_impl(TokenType type2, int offset2, String value2) {
     this._type = type2;
     this._value = StringUtilities.intern(value2);
     this._offset = offset2;
   }
-  
+
   /**
    * Return the offset from the beginning of the file to the character after last character of the
    * token.
@@ -78,43 +74,43 @@ class Token {
    * of the token
    */
   int get end => _offset + length;
-  
+
   /**
    * Return the number of characters in the node's source range.
    * @return the number of characters in the node's source range
    */
   int get length => lexeme.length;
-  
+
   /**
    * Return the lexeme that represents this token.
    * @return the lexeme (not {@code null})
    */
   String get lexeme => _value;
-  
+
   /**
    * Return the next token in the token stream.
    * @return the next token in the token stream
    */
   Token get next => _next;
-  
+
   /**
    * Return the offset from the beginning of the file to the first character in the token.
    * @return the offset from the beginning of the file to the first character in the token
    */
   int get offset => _offset;
-  
+
   /**
    * Return the previous token in the token stream.
    * @return the previous token in the token stream
    */
   Token get previous => _previous;
-  
+
   /**
    * Answer the token type for the receiver.
    * @return the token type (not {@code null})
    */
   TokenType get type => _type;
-  
+
   /**
    * Return {@code true} if this token is a synthetic token. A synthetic token is a token that was
    * introduced by the parser in order to recover from an error in the code. Synthetic tokens always
@@ -122,7 +118,7 @@ class Token {
    * @return {@code true} if this token is a synthetic token
    */
   bool isSynthetic() => length == 0;
-  
+
   /**
    * Set the next token in the token stream to the given token. This has the side-effect of setting
    * this token to be the previous token for the given token.
@@ -135,7 +131,7 @@ class Token {
     return token;
   }
   String toString() => lexeme;
-  
+
   /**
    * Set the previous token in the token stream to the given token.
    * @param previous the previous token in the token stream
@@ -144,13 +140,12 @@ class Token {
     this._previous = previous2;
   }
 }
-
 /**
  * Instances of {@code HtmlParseResult} hold the result of parsing an HTML file.
  * @coverage dart.engine.html
  */
 class HtmlParseResult extends HtmlScanResult {
-  
+
   /**
    * The unit containing the parsed information (not {@code null}).
    */
@@ -158,14 +153,13 @@ class HtmlParseResult extends HtmlScanResult {
   HtmlParseResult(int modificationTime, Token token, List<int> lineStarts, HtmlUnit unit) : super(modificationTime, token, lineStarts) {
     this._unit = unit;
   }
-  
+
   /**
    * Answer the unit generated by parsing the source
    * @return the unit (not {@code null})
    */
   HtmlUnit get htmlUnit => _unit;
 }
-
 /**
  * Instances of the class {@code RecursiveXmlVisitor} implement an XML visitor that will recursively
  * visit all of the nodes in an XML structure. For example, using an instance of this class to visit
@@ -190,31 +184,30 @@ class RecursiveXmlVisitor<R> implements XmlVisitor<R> {
     return null;
   }
 }
-
 /**
  * The abstract class {@code XmlNode} defines behavior common to all XML/HTML nodes.
  * @coverage dart.engine.html
  */
 abstract class XmlNode {
-  
+
   /**
    * The parent of the node, or {@code null} if the node is the root of an AST structure.
    */
   XmlNode _parent;
-  
+
   /**
    * Use the given visitor to visit this node.
    * @param visitor the visitor that will visit this node
    * @return the value returned by the visitor as a result of visiting this node
    */
   accept(XmlVisitor visitor);
-  
+
   /**
    * Return the first token included in this node's source range.
    * @return the first token or {@code null} if none
    */
   Token get beginToken;
-  
+
   /**
    * Return the offset of the character immediately following the last character of this node's
    * source range. This is equivalent to {@code node.getOffset() + node.getLength()}. For an html
@@ -222,13 +215,13 @@ abstract class XmlNode {
    * @return the offset of the character just past the node's source range
    */
   int get end => offset + length;
-  
+
   /**
    * Return the last token included in this node's source range.
    * @return the last token or {@code null} if none
    */
   Token get endToken;
-  
+
   /**
    * Return the number of characters in the node's source range.
    * @return the number of characters in the node's source range
@@ -241,7 +234,7 @@ abstract class XmlNode {
     }
     return endToken2.offset + endToken2.length - beginToken2.offset;
   }
-  
+
   /**
    * Return the offset from the beginning of the file to the first character in the node's source
    * range.
@@ -255,7 +248,7 @@ abstract class XmlNode {
     }
     return beginToken.offset;
   }
-  
+
   /**
    * Return this node's parent node, or {@code null} if this node is the root of an AST structure.
    * <p>
@@ -269,14 +262,14 @@ abstract class XmlNode {
     accept(new ToSourceVisitor(writer));
     return writer.toString();
   }
-  
+
   /**
    * Use the given visitor to visit all of the children of this node. The children will be visited
    * in source order.
    * @param visitor the visitor that will be used to visit the children of this node
    */
   void visitChildren(XmlVisitor<Object> visitor);
-  
+
   /**
    * Make this node the parent of the given child nodes.
    * @param children the nodes that will become the children of this node
@@ -292,7 +285,7 @@ abstract class XmlNode {
     }
     return children;
   }
-  
+
   /**
    * Make this node the parent of the given child node.
    * @param child the node that will become a child of this node
@@ -305,7 +298,7 @@ abstract class XmlNode {
     }
     return child;
   }
-  
+
   /**
    * Set the parent of this node to the given node.
    * @param newParent the node that is to be made the parent of this node
@@ -314,7 +307,6 @@ abstract class XmlNode {
     _parent = newParent;
   }
 }
-
 /**
  * Instances of the class {@code SimpleXmlVisitor} implement an AST visitor that will do nothing
  * when visiting an AST node. It is intended to be a superclass for classes that use the visitor
@@ -326,7 +318,6 @@ class SimpleXmlVisitor<R> implements XmlVisitor<R> {
   R visitXmlAttributeNode(XmlAttributeNode xmlAttributeNode) => null;
   R visitXmlTagNode(XmlTagNode xmlTagNode) => null;
 }
-
 /**
  * The abstract class {@code AbstractScanner} implements a scanner for HTML code. Subclasses are
  * required to implement the interface used to access the characters being scanned.
@@ -334,32 +325,32 @@ class SimpleXmlVisitor<R> implements XmlVisitor<R> {
  */
 abstract class AbstractScanner {
   static List<String> _NO_PASS_THROUGH_ELEMENTS = <String> [];
-  
+
   /**
    * The source being scanned.
    */
   Source _source;
-  
+
   /**
    * The token pointing to the head of the linked list of tokens.
    */
   Token _tokens;
-  
+
   /**
    * The last token that was scanned.
    */
   Token _tail;
-  
+
   /**
    * A list containing the offsets of the first character of each line in the source code.
    */
   List<int> _lineStarts = new List<int>();
-  
+
   /**
    * An array of element tags for which the content between tags should be consider a single token.
    */
   List<String> _passThroughElements = _NO_PASS_THROUGH_ELEMENTS;
-  
+
   /**
    * Initialize a newly created scanner.
    * @param source the source being scanned
@@ -371,13 +362,13 @@ abstract class AbstractScanner {
     _tail = _tokens;
     recordStartOfLine();
   }
-  
+
   /**
    * Return an array containing the offsets of the first character of each line in the source code.
    * @return an array containing the offsets of the first character of each line in the source code
    */
   List<int> get lineStarts => _lineStarts;
-  
+
   /**
    * Return the current offset relative to the beginning of the file. Return the initial offset if
    * the scanner has not yet scanned the source code, and one (1) past the end of the source code if
@@ -385,20 +376,20 @@ abstract class AbstractScanner {
    * @return the current offset of the scanner in the source
    */
   int get offset;
-  
+
   /**
    * Answer the source being scanned.
    * @return the source or {@code null} if undefined
    */
   Source get source => _source;
-  
+
   /**
    * Set array of element tags for which the content between tags should be consider a single token.
    */
   void set passThroughElements(List<String> passThroughElements2) {
     this._passThroughElements = passThroughElements2 != null ? passThroughElements2 : _NO_PASS_THROUGH_ELEMENTS;
   }
-  
+
   /**
    * Scan the source code to produce a list of tokens representing the source.
    * @return the first token in the list of tokens that were produced
@@ -408,13 +399,13 @@ abstract class AbstractScanner {
     appendEofToken();
     return firstToken();
   }
-  
+
   /**
    * Advance the current position and return the character at the new current position.
    * @return the character at the new current position
    */
   int advance();
-  
+
   /**
    * Return the substring of the source code between the start offset and the modified current
    * position. The current position is modified by adding the end delta.
@@ -425,13 +416,13 @@ abstract class AbstractScanner {
    * @return the specified substring of the source code
    */
   String getString(int start, int endDelta);
-  
+
   /**
    * Return the character at the current position without changing the current position.
    * @return the character at the current position
    */
   int peek();
-  
+
   /**
    * Record the fact that we are at the beginning of a new line in the source.
    */
@@ -601,23 +592,22 @@ abstract class AbstractScanner {
     }
   }
 }
-
 /**
  * Instances of {@code HtmlScanResult} hold the result of scanning an HTML file.
  * @coverage dart.engine.html
  */
 class HtmlScanResult {
-  
+
   /**
    * The time at which the contents of the source were last set.
    */
   int _modificationTime = 0;
-  
+
   /**
    * The first token in the token stream (not {@code null}).
    */
   Token _token;
-  
+
   /**
    * The line start information that was produced.
    */
@@ -627,48 +617,47 @@ class HtmlScanResult {
     this._token = token;
     this._lineStarts = lineStarts;
   }
-  
+
   /**
    * Answer the line start information that was produced.
    * @return an array of line starts (not {@code null})
    */
   List<int> get lineStarts => _lineStarts;
-  
+
   /**
    * Return the time at which the contents of the source were last set.
    * @return the time at which the contents of the source were last set
    */
   int get modificationTime => _modificationTime;
-  
+
   /**
    * Answer the first token in the token stream.
    * @return the token (not {@code null})
    */
   Token get token => _token;
 }
-
 /**
  * Instances of the class {@code StringScanner} implement a scanner that reads from a string. The
  * scanning logic is in the superclass.
  * @coverage dart.engine.html
  */
 class StringScanner extends AbstractScanner {
-  
+
   /**
    * The string from which characters will be read.
    */
   String _string;
-  
+
   /**
    * The number of characters in the string.
    */
   int _stringLength = 0;
-  
+
   /**
    * The index, relative to the string, of the last character that was read.
    */
   int _charOffset = 0;
-  
+
   /**
    * Initialize a newly created scanner to scan the characters in the given string.
    * @param source the source being scanned
@@ -698,29 +687,28 @@ class StringScanner extends AbstractScanner {
     return -1;
   }
 }
-
 /**
  * Instances of the class {@code CharBufferScanner} implement a scanner that reads from a character
  * buffer. The scanning logic is in the superclass.
  * @coverage dart.engine.html
  */
 class CharBufferScanner extends AbstractScanner {
-  
+
   /**
    * The buffer from which characters will be read.
    */
   CharSequence _buffer;
-  
+
   /**
    * The number of characters in the buffer.
    */
   int _bufferLength = 0;
-  
+
   /**
    * The index of the last character that was read.
    */
   int _charOffset = 0;
-  
+
   /**
    * Initialize a newly created scanner to scan the characters in the given character buffer.
    * @param source the source being scanned
@@ -747,19 +735,18 @@ class CharBufferScanner extends AbstractScanner {
     return -1;
   }
 }
-
 /**
  * Instances of the class {@code ToSourceVisitor} write a source representation of a visited XML
  * node (and all of it's children) to a writer.
  * @coverage dart.engine.html
  */
 class ToSourceVisitor implements XmlVisitor<Object> {
-  
+
   /**
    * The writer to which the source is to be written.
    */
   PrintWriter _writer;
-  
+
   /**
    * Initialize a newly created visitor to write source code representing the visited nodes to the
    * given writer.
@@ -809,7 +796,7 @@ class ToSourceVisitor implements XmlVisitor<Object> {
     }
     return null;
   }
-  
+
   /**
    * Safely visit the given node.
    * @param node the node to be visited
@@ -820,14 +807,13 @@ class ToSourceVisitor implements XmlVisitor<Object> {
     }
   }
 }
-
 /**
  * The enumeration {@code TokenType} defines the types of tokens that can be returned by the
  * scanner.
  * @coverage dart.engine.html
  */
 class TokenType implements Comparable<TokenType> {
-  
+
   /**
    * The type of the token that marks the end of the input.
    */
@@ -844,13 +830,13 @@ class TokenType implements Comparable<TokenType> {
   static final TokenType TAG = new TokenType('TAG', 10, null);
   static final TokenType TEXT = new TokenType('TEXT', 11, null);
   static final List<TokenType> values = [EOF, EQ, GT, LT_SLASH, LT, SLASH_GT, COMMENT, DECLARATION, DIRECTIVE, STRING, TAG, TEXT];
-  
+
   /// The name of this enum constant, as declared in the enum declaration.
   final String name;
-  
+
   /// The position in the enum declaration.
   final int ordinal;
-  
+
   /**
    * The lexeme that defines this type of token, or {@code null} if there is more than one possible
    * lexeme for this type of token.
@@ -859,7 +845,7 @@ class TokenType implements Comparable<TokenType> {
   TokenType(this.name, this.ordinal, String lexeme) {
     this._lexeme = lexeme;
   }
-  
+
   /**
    * Return the lexeme that defines this type of token, or {@code null} if there is more than one
    * possible lexeme for this type of token.
@@ -873,7 +859,6 @@ class TokenType_EOF extends TokenType {
   TokenType_EOF(String name, int ordinal, String arg0) : super(name, ordinal, arg0);
   String toString() => "-eof-";
 }
-
 /**
  * Instances of {@code XmlAttributeNode} represent name/value pairs owned by an {@link XmlTagNode}.
  * @coverage dart.engine.html
@@ -882,7 +867,7 @@ class XmlAttributeNode extends XmlNode {
   Token _name;
   Token _equals;
   Token _value;
-  
+
   /**
    * Construct a new instance representing an XML attribute.
    * @param name the name token (not {@code null}). This may be a zero length token if the attribute
@@ -898,19 +883,19 @@ class XmlAttributeNode extends XmlNode {
   accept(XmlVisitor visitor) => visitor.visitXmlAttributeNode(this);
   Token get beginToken => _name;
   Token get endToken => _value;
-  
+
   /**
    * Answer the equals sign token that appears between the name and value tokens. This may be{@code null} if the attribute is badly formed.
    * @return the token or {@code null} if there is no equals sign between the name and value
    */
   Token get equals => _equals;
-  
+
   /**
    * Answer the attribute name. This may be a zero length token if the attribute is badly formed.
    * @return the name (not {@code null})
    */
   Token get name => _name;
-  
+
   /**
    * Answer the lexeme for the value token without the leading and trailing quotes.
    * @return the text or {@code null} if the value is not specified
@@ -938,7 +923,7 @@ class XmlAttributeNode extends XmlNode {
     }
     return text;
   }
-  
+
   /**
    * Answer the attribute value. A properly formed value will start and end with matching quote
    * characters, but the value returned may not be properly formed.
@@ -948,7 +933,6 @@ class XmlAttributeNode extends XmlNode {
   void visitChildren(XmlVisitor<Object> visitor) {
   }
 }
-
 /**
  * The interface {@code XmlVisitor} defines the behavior of objects that can be used to visit an{@link XmlNode} structure.
  * @coverage dart.engine.html
@@ -958,7 +942,6 @@ abstract class XmlVisitor<R> {
   R visitXmlAttributeNode(XmlAttributeNode xmlAttributeNode);
   R visitXmlTagNode(XmlTagNode xmlTagNode);
 }
-
 /**
  * Instances of {@code HtmlScanner} receive and scan HTML content from a {@link Source}.<br/>
  * For example, the following code scans HTML source and returns the result:
@@ -971,27 +954,27 @@ abstract class XmlVisitor<R> {
  */
 class HtmlScanner implements Source_ContentReceiver {
   List<String> _SCRIPT_TAG = <String> ["script"];
-  
+
   /**
    * The source being scanned (not {@code null})
    */
   Source _source;
-  
+
   /**
    * The time at which the contents of the source were last set.
    */
   int _modificationTime = 0;
-  
+
   /**
    * The scanner used to scan the source
    */
   AbstractScanner _scanner;
-  
+
   /**
    * The first token in the token stream.
    */
   Token _token;
-  
+
   /**
    * Construct a new instance to scan the specified source.
    * @param source the source to be scanned (not {@code null})
@@ -1011,31 +994,30 @@ class HtmlScanner implements Source_ContentReceiver {
     _scanner.passThroughElements = _SCRIPT_TAG;
     _token = _scanner.tokenize();
   }
-  
+
   /**
    * Answer the result of scanning the source
    * @return the result (not {@code null})
    */
   HtmlScanResult get result => new HtmlScanResult(_modificationTime, _token, _scanner.lineStarts);
 }
-
 /**
  * Instances of the class {@code XmlParser} are used to parse tokens into a AST structure comprised
  * of {@link XmlNode}s.
  * @coverage dart.engine.html
  */
 class XmlParser {
-  
+
   /**
    * The source being parsed.
    */
   Source _source;
-  
+
   /**
    * The next token to be parsed.
    */
   Token _currentToken;
-  
+
   /**
    * Construct a parser for the specified source.
    * @param source the source being parsed
@@ -1043,13 +1025,13 @@ class XmlParser {
   XmlParser(Source source) {
     this._source = source;
   }
-  
+
   /**
    * Answer the source being parsed.
    * @return the source
    */
   Source get source => _source;
-  
+
   /**
    * Answer {@code true} if the specified tag is self closing and thus should never have content or
    * child tag nodes.
@@ -1057,7 +1039,7 @@ class XmlParser {
    * @return {@code true} if self closing
    */
   bool isSelfClosing(Token tag) => false;
-  
+
   /**
    * Parse the entire token stream and in the process, advance the current token to the end of the
    * token stream.
@@ -1082,13 +1064,13 @@ class XmlParser {
       }
     }
   }
-  
+
   /**
    * Answer the current token.
    * @return the current token
    */
   Token get currentToken => _currentToken;
-  
+
   /**
    * Insert a synthetic token of the specified type before the current token
    * @param type the type of token to be inserted (not {@code null})
@@ -1100,7 +1082,7 @@ class XmlParser {
     token.setNext(_currentToken);
     return token;
   }
-  
+
   /**
    * Parse the token stream for an attribute. This method advances the current token over the
    * attribute, but should not be called if the {@link #currentToken} is not {@link TokenType#TAG}.
@@ -1127,7 +1109,7 @@ class XmlParser {
     }
     return new XmlAttributeNode(name, equals, value);
   }
-  
+
   /**
    * Parse the stream for a sequence of attributes. This method advances the current token to the
    * next {@link TokenType#GT}, {@link TokenType#SLASH_GT}, or {@link TokenType#EOF}.
@@ -1153,7 +1135,7 @@ class XmlParser {
       }
     }
   }
-  
+
   /**
    * Parse the stream for a sequence of tag nodes existing within a parent tag node. This method
    * advances the current token to the next {@link TokenType#LT_SLASH} or {@link TokenType#EOF}.
@@ -1181,7 +1163,7 @@ class XmlParser {
       }
     }
   }
-  
+
   /**
    * Parse the token stream for the next tag node. This method advances current token over the
    * parsed tag node, but should only be called if the current token is {@link TokenType#LT}
@@ -1237,55 +1219,54 @@ class XmlParser {
     }
     return new XmlTagNode(nodeStart, tag, attributes, attributeEnd, tagNodes, contentEnd, closingTag, nodeEnd);
   }
-  
+
   /**
    * Report the current token as unexpected
    */
   void reportUnexpectedToken() {
   }
 }
-
 /**
  * Instances of {@code XmlTagNode} represent XML or HTML elements such as {@code <p>} and{@code <body foo="bar"> ... </body>}.
  * @coverage dart.engine.html
  */
 class XmlTagNode extends XmlNode {
-  
+
   /**
    * Constant representing empty list of attributes.
    */
   static List<XmlAttributeNode> NO_ATTRIBUTES = new UnmodifiableListView(new List<XmlAttributeNode>());
-  
+
   /**
    * Constant representing empty list of tag nodes.
    */
   static List<XmlTagNode> NO_TAG_NODES = new UnmodifiableListView(new List<XmlTagNode>());
-  
+
   /**
    * The starting {@link TokenType#LT} token (not {@code null}).
    */
   Token _nodeStart;
-  
+
   /**
    * The {@link TokenType#TAG} token after the starting '&lt;' (not {@code null}).
    */
   Token _tag;
-  
+
   /**
    * The attributes contained by the receiver (not {@code null}, contains no {@code null}s).
    */
   List<XmlAttributeNode> _attributes;
-  
+
   /**
    * The {@link TokenType#GT} or {@link TokenType#SLASH_GT} token after the attributes (not{@code null}). The token may be the same token as {@link #nodeEnd} if there are no child{@link #tagNodes}.
    */
   Token _attributeEnd;
-  
+
   /**
    * The tag nodes contained in the receiver (not {@code null}, contains no {@code null}s).
    */
   List<XmlTagNode> _tagNodes;
-  
+
   /**
    * The token (not {@code null}) after the content, which may be
    * <ul>
@@ -1298,18 +1279,18 @@ class XmlTagNode extends XmlNode {
    * </ul>
    */
   Token _contentEnd;
-  
+
   /**
    * The closing {@link TokenType#TAG} after the child elements or {@code null} if there is no
    * content and the attributes ended with {@link TokenType#SLASH_GT}
    */
   Token _closingTag;
-  
+
   /**
    * The ending {@link TokenType#GT} or {@link TokenType#SLASH_GT} token (not {@code null}).
    */
   Token _nodeEnd;
-  
+
   /**
    * Construct a new instance representing an XML or HTML element
    * @param nodeStart the starting {@link TokenType#LT} token (not {@code null})
@@ -1343,7 +1324,7 @@ class XmlTagNode extends XmlNode {
     this._nodeEnd = nodeEnd;
   }
   accept(XmlVisitor visitor) => visitor.visitXmlTagNode(this);
-  
+
   /**
    * Answer the attribute with the specified name.
    * @param name the attribute name
@@ -1357,20 +1338,20 @@ class XmlTagNode extends XmlNode {
     }
     return null;
   }
-  
+
   /**
    * The {@link TokenType#GT} or {@link TokenType#SLASH_GT} token after the attributes (not{@code null}). The token may be the same token as {@link #nodeEnd} if there are no child{@link #tagNodes}.
    * @return the token (not {@code null})
    */
   Token get attributeEnd => _attributeEnd;
-  
+
   /**
    * Answer the receiver's attributes. Callers should not manipulate the returned list to edit the
    * AST structure.
    * @return the attributes (not {@code null}, contains no {@code null}s)
    */
   List<XmlAttributeNode> get attributes => _attributes;
-  
+
   /**
    * Find the attribute with the given name (see {@link #getAttribute(String)} and answer the lexeme
    * for the attribute's value token without the leading and trailing quotes (see{@link XmlAttributeNode#getText()}).
@@ -1382,14 +1363,14 @@ class XmlTagNode extends XmlNode {
     return attribute != null ? attribute.text : null;
   }
   Token get beginToken => _nodeStart;
-  
+
   /**
    * The the closing {@link TokenType#TAG} after the child elements or {@code null} if there is no
    * content and the attributes ended with {@link TokenType#SLASH_GT}
    * @return the closing tag or {@code null}
    */
   Token get closingTag => _closingTag;
-  
+
   /**
    * Answer a string representing the content contained in the receiver. This includes the textual
    * representation of any child tag nodes ({@link #getTagNodes()}). Whitespace between '&lt;',
@@ -1413,7 +1394,7 @@ class XmlTagNode extends XmlNode {
     }
     return buffer.toString();
   }
-  
+
   /**
    * Answer the token (not {@code null}) after the content, which may be
    * <ul>
@@ -1448,25 +1429,25 @@ class XmlTagNode extends XmlNode {
     }
     return _tag;
   }
-  
+
   /**
    * Answer the ending {@link TokenType#GT} or {@link TokenType#SLASH_GT} token.
    * @return the token (not {@code null})
    */
   Token get nodeEnd => _nodeEnd;
-  
+
   /**
    * Answer the starting {@link TokenType#LT} token.
    * @return the token (not {@code null})
    */
   Token get nodeStart => _nodeStart;
-  
+
   /**
    * Answer the {@link TokenType#TAG} token after the starting '&lt;'.
    * @return the token (not {@code null})
    */
   Token get tag => _tag;
-  
+
   /**
    * Answer the tag nodes contained in the receiver. Callers should not manipulate the returned list
    * to edit the AST structure.
@@ -1481,7 +1462,7 @@ class XmlTagNode extends XmlNode {
       node.accept(visitor);
     }
   }
-  
+
   /**
    * Same as {@link #becomeParentOf(List)}, but returns given "ifEmpty" if "children" is empty
    */
@@ -1492,7 +1473,6 @@ class XmlTagNode extends XmlNode {
     return becomeParentOf(children);
   }
 }
-
 /**
  * Instances of the class {@code HtmlParser} are used to parse tokens into a AST structure comprised
  * of {@link XmlNode}s.
@@ -1500,14 +1480,14 @@ class XmlTagNode extends XmlNode {
  */
 class HtmlParser extends XmlParser {
   static Set<String> SELF_CLOSING = new Set<String>();
-  
+
   /**
    * Construct a parser for the specified source.
    * @param source the source being parsed
    */
   HtmlParser(Source source) : super(source) {
   }
-  
+
   /**
    * Parse the tokens specified by the given scan result.
    * @param scanResult the result of scanning an HTML source (not {@code null})
@@ -1519,7 +1499,7 @@ class HtmlParser extends XmlParser {
     HtmlUnit unit = new HtmlUnit(firstToken, tagNodes, currentToken);
     return new HtmlParseResult(scanResult.modificationTime, firstToken, scanResult.lineStarts, unit);
   }
-  
+
   /**
    * Scan then parse the specified source.
    * @param source the source to be scanned and parsed (not {@code null})
@@ -1532,34 +1512,33 @@ class HtmlParser extends XmlParser {
   }
   bool isSelfClosing(Token tag) => SELF_CLOSING.contains(tag.lexeme);
 }
-
 /**
  * Instances of the class {@code HtmlUnit} represent the contents of an HTML file.
  * @coverage dart.engine.html
  */
 class HtmlUnit extends XmlNode {
-  
+
   /**
    * The first token in the token stream that was parsed to form this HTML unit.
    */
   Token _beginToken;
-  
+
   /**
    * The last token in the token stream that was parsed to form this compilation unit. This token
    * should always have a type of {@link TokenType.EOF}.
    */
   Token _endToken;
-  
+
   /**
    * The tag nodes contained in the receiver (not {@code null}, contains no {@code null}s).
    */
   List<XmlTagNode> _tagNodes;
-  
+
   /**
    * The element associated with this HTML unit or {@code null} if the receiver is not resolved.
    */
   HtmlElementImpl _element;
-  
+
   /**
    * Construct a new instance representing the content of an HTML file.
    * @param beginToken the first token in the file (not {@code null})
@@ -1573,21 +1552,21 @@ class HtmlUnit extends XmlNode {
   }
   accept(XmlVisitor visitor) => visitor.visitHtmlUnit(this);
   Token get beginToken => _beginToken;
-  
+
   /**
    * Return the element associated with this HTML unit.
    * @return the element or {@code null} if the receiver is not resolved
    */
   HtmlElementImpl get element => _element;
   Token get endToken => _endToken;
-  
+
   /**
    * Answer the tag nodes contained in the receiver. Callers should not manipulate the returned list
    * to edit the AST structure.
    * @return the children (not {@code null}, contains no {@code null}s)
    */
   List<XmlTagNode> get tagNodes => _tagNodes;
-  
+
   /**
    * Set the element associated with this HTML unit.
    * @param element the element