anchor.diff:  
   <% struct.fields.select{|field| field.gwt?}.each do |field|
     if field.collection?
  -    collection_type_impl = field.collection_type == :set ? "HashSet" : "ArrayList"
  +    collection_type_impl = field.collection_type == :set ? 'HashSet' : 'ArrayList'
       gwt_type_suffix =
         case
  -        when field.date? || field.text? then "String"
  -        when field.enumeration? && !field.enumeration.textual_values? then "Integer"
  -        when field.enumeration? && field.enumeration.textual_values? then "String"
  -        when field.integer? then "Integer"
  -        when field.boolean? then "Boolean"
  +        when field.date? || field.text? then 'String'
  +        when field.enumeration? && !field.enumeration.textual_values? then 'Integer'
  +        when field.enumeration? && field.enumeration.textual_values? then 'String'
  +        when field.integer? then'Integer'
  +        when field.boolean? then'Boolean'
           when field.struct? then "<#{field.referenced_struct.gwt.qualified_jso_name}>"
           else (Domgen.error("Unsupported field type #{field.name}"))
         end
  
positive.code:     return <%= field.gwt.java_type %>.<%= field.enumeration.textual_values? ? "valueOf( #{transport_value} )" : "values()[ #{transport_value} ]" %>;
    }
  
    private native <%= field.enumeration.textual_values? ? "String" : "int" %> <%= getter_prefix(field) %><%= field.name %>0() /*-{
      return this.<%= field.json.name %>;
    }-*/;
  
  
negative.code:     final int size = source.length();
      for( int i = 0; i < size; i++ )
      {
        collection.add( <%= conversion_rule.call(field,'source.get( i )') %> );
      }
      return java.util.Collections.unmodifiable<%= field.collection_type == :set ?'Set':'List'%>( collection );
  <% end %>
    }
  
  