java2dart improvement - use field if getter/setter are trivial.

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

 // 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.instrumentation;
 import 'java_core.dart';
 /**
  * The class `Instrumentation` implements support for logging instrumentation information.
  *
  * Instrumentation information consists of information about specific operations. Those operations
  * can range from user-facing operations, such as saving the changes to a file, to internal
  * operations, such as tokenizing source code. The information to be logged is gathered by
@@ skipping 20 matching lines @@
  * save operation can be calculated. The `log` method tells the builder that all of the data
  * has been collected and that the resulting information should be logged.
  *
  * @coverage dart.engine.utilities
  */
 class Instrumentation {
 
   /**
    * A builder that will silently ignore all data and logging requests.
    */
-  static InstrumentationBuilder _NULL_INSTRUMENTATION_BUILDER = new InstrumentationBuilder_16();
+  static final InstrumentationBuilder nullBuilder = new InstrumentationBuilder_16();
 
   /**
    * An instrumentation logger that can be used when no other instrumentation logger has been
    * configured. This logger will silently ignore all data and logging requests.
    */
   static InstrumentationLogger _NULL_LOGGER = new InstrumentationLogger_17();
 
   /**
    * The current instrumentation logger.
    */
@@ skipping 14 matching lines @@
    * @return the builder that was created (not `null`)
    */
   static InstrumentationBuilder builder2(String name) => _CURRENT_LOGGER.createBuilder(name);
 
   /**
    * Get the currently active instrumentation logger
    */
   static InstrumentationLogger get logger => _CURRENT_LOGGER;
 
   /**
-   * Return a builder that will silently ignore all data and logging requests.
-   *
-   * @return the builder (not `null`)
-   */
-  static InstrumentationBuilder get nullBuilder => _NULL_INSTRUMENTATION_BUILDER;
-
-  /**
    * Is this instrumentation system currently configured to drop instrumentation data provided to
    * it?
    *
    * @return
    */
   static bool get isNullLogger => identical(_CURRENT_LOGGER, _NULL_LOGGER);
 
   /**
    * Set the logger that should receive instrumentation information to the given logger.
    *
@@ skipping 13 matching lines @@
   }
   void log2(int minTimeToLong) {
   }
   InstrumentationBuilder metric(String name, bool value) => this;
   InstrumentationBuilder metric2(String name, int value) => this;
   InstrumentationBuilder metric3(String name, String value) => this;
   InstrumentationBuilder metric4(String name, List<String> value) => this;
   InstrumentationBuilder record(Exception exception) => this;
 }
 class InstrumentationLogger_17 implements InstrumentationLogger {
-  InstrumentationBuilder createBuilder(String name) => Instrumentation._NULL_INSTRUMENTATION_BUILDER;
+  InstrumentationBuilder createBuilder(String name) => Instrumentation.nullBuilder;
 }
 /**
  * The interface `InstrumentationBuilder` defines the behavior of objects used to collect data
  * about an operation that has occurred and record that data through an instrumentation logger.
  *
  * For an example of using objects that implement this interface, see [Instrumentation].
  *
  * @coverage dart.engine.utilities
  */
 abstract class InstrumentationBuilder {
@@ skipping 165 matching lines @@
 
   /**
    * Create a builder that can collect the data associated with an operation identified by the given
    * name.
    *
    * @param name the name used to uniquely identify the operation
    * @return the builder that was created
    */
   InstrumentationBuilder createBuilder(String name);
 }