Explicitly specify that FilePath is not just absolute, but also a normalized path.

pkg/analysis_server/lib/plugin/protocol/generated_protocol.dart

Index: pkg/analysis_server/lib/plugin/protocol/generated_protocol.dart
diff --git a/pkg/analysis_server/lib/plugin/protocol/generated_protocol.dart b/pkg/analysis_server/lib/plugin/protocol/generated_protocol.dart
index 81ad8dcb692f53c3b3ea4028f2e20f65dda97261..e17dcd15c6465f576a0f3a437bbbdadb6bb44ee9 100644
--- a/pkg/analysis_server/lib/plugin/protocol/generated_protocol.dart
+++ b/pkg/analysis_server/lib/plugin/protocol/generated_protocol.dart
@@ -14093,6 +14093,7 @@ class RequestError implements HasToJson {
  *   GET_REACHABLE_SOURCES_INVALID_FILE
  *   INVALID_ANALYSIS_ROOT
  *   INVALID_EXECUTION_CONTEXT
+ *   INVALID_FILE_PATH_FORMAT
  *   INVALID_OVERLAY_CHANGE
  *   INVALID_PARAMETER
  *   INVALID_REQUEST
@@ -14166,6 +14167,12 @@ class RequestErrorCode implements Enum {
   static const INVALID_EXECUTION_CONTEXT = const RequestErrorCode._("INVALID_EXECUTION_CONTEXT");
 
   /**
+   * The format of the given file path is invalid, e.g. is not absolute and
+   * normalized.
+   */
+  static const INVALID_FILE_PATH_FORMAT = const RequestErrorCode._("INVALID_FILE_PATH_FORMAT");
+
+  /**
    * An "analysis.updateContent" request contained a ChangeContentOverlay
    * object which can't be applied, due to an edit having an offset or length
    * that is out of range.
@@ -14260,7 +14267,7 @@ class RequestErrorCode implements Enum {
   /**
    * A list containing all of the enum values that are defined.
    */
-  static const List<RequestErrorCode> VALUES = const <RequestErrorCode>[CONTENT_MODIFIED, FILE_NOT_ANALYZED, FORMAT_INVALID_FILE, FORMAT_WITH_ERRORS, GET_ERRORS_INVALID_FILE, GET_NAVIGATION_INVALID_FILE, GET_REACHABLE_SOURCES_INVALID_FILE, INVALID_ANALYSIS_ROOT, INVALID_EXECUTION_CONTEXT, INVALID_OVERLAY_CHANGE, INVALID_PARAMETER, INVALID_REQUEST, NO_INDEX_GENERATED, ORGANIZE_DIRECTIVES_ERROR, REFACTORING_REQUEST_CANCELLED, SERVER_ALREADY_STARTED, SERVER_ERROR, SORT_MEMBERS_INVALID_FILE, SORT_MEMBERS_PARSE_ERRORS, UNANALYZED_PRIORITY_FILES, UNKNOWN_REQUEST, UNKNOWN_SOURCE, UNSUPPORTED_FEATURE];
+  static const List<RequestErrorCode> VALUES = const <RequestErrorCode>[CONTENT_MODIFIED, FILE_NOT_ANALYZED, FORMAT_INVALID_FILE, FORMAT_WITH_ERRORS, GET_ERRORS_INVALID_FILE, GET_NAVIGATION_INVALID_FILE, GET_REACHABLE_SOURCES_INVALID_FILE, INVALID_ANALYSIS_ROOT, INVALID_EXECUTION_CONTEXT, INVALID_FILE_PATH_FORMAT, INVALID_OVERLAY_CHANGE, INVALID_PARAMETER, INVALID_REQUEST, NO_INDEX_GENERATED, ORGANIZE_DIRECTIVES_ERROR, REFACTORING_REQUEST_CANCELLED, SERVER_ALREADY_STARTED, SERVER_ERROR, SORT_MEMBERS_INVALID_FILE, SORT_MEMBERS_PARSE_ERRORS, UNANALYZED_PRIORITY_FILES, UNKNOWN_REQUEST, UNKNOWN_SOURCE, UNSUPPORTED_FEATURE];
 
   final String name;
 
@@ -14286,6 +14293,8 @@ class RequestErrorCode implements Enum {
         return INVALID_ANALYSIS_ROOT;
       case "INVALID_EXECUTION_CONTEXT":
         return INVALID_EXECUTION_CONTEXT;
+      case "INVALID_FILE_PATH_FORMAT":
+        return INVALID_FILE_PATH_FORMAT;
       case "INVALID_OVERLAY_CHANGE":
         return INVALID_OVERLAY_CHANGE;
       case "INVALID_PARAMETER":