ClientBundleFields (GWT Javadoc)

```
public interface ClientBundleFields
```
Allows ResourceGenerators to define fields within the implementation class for a bundle type. An instance of this interface will be provided via the ResourceGenerator.createFields(com.google.gwt.core.ext.TreeLogger, com.google.gwt.resources.ext.ResourceContext, com.google.gwt.resources.ext.ClientBundleFields) method.
Because multiple, unrelated ResourceGenerators may be generating method implementations within a single bundle implementation, it is necessary to ensure that they do not attempt to declare multiple fields with the same name. The methods in this interface will provide a guaranteed-unique identifier to use when generating method implementations.
Multiple invocations of the define(com.google.gwt.core.ext.typeinfo.JType, java.lang.String) method with the same inputs will result in different identifiers being produced.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`java.lang.String`	`define(JType type, java.lang.String name)`	Adds a field to the bundle.
`java.lang.String`	`define(JType type, java.lang.String name, java.lang.String initializer, boolean isStatic, boolean isFinal)`	Adds a field to the bundle.

- Method Detail
  - define
```
java.lang.String define(JType type,
                        java.lang.String name)
```
    Adds a field to the bundle. Equivalent to defineField(type, name, null, true, false).
    
    Parameters:
    
    type - the declared type of the field
    
    name - a Java identifier to be used as the basis for the name of the field
    
    Returns:
    
    the identifier that must be used to access the field
  - define
```
java.lang.String define(JType type,
                        java.lang.String name,
                        java.lang.String initializer,
                        boolean isStatic,
                        boolean isFinal)
```
    Adds a field to the bundle.
    
    Parameters:
    
    type - the declared type of the field
    
    name - a Java identifier to be used as the basis for the name of the field
    
    initializer - a Java expression that will be used as the field's initializer, or null if no initialization expression is desired
    
    isStatic - if true the field will be declared to be static
    
    isFinal - if true the fields will be declared as final
    
    Returns:
    
    the identifier that must be used to access the field