Bug 127861 [DataBinding] Mark API provisional
bundles/org.eclipse.jface.databinding/src/org/eclipse/jface/databinding/IDataBindingContext.java
*/
	public IValidator createValidator(Class fromType, Class toType,
			Object modelDescription);
	/**
	 * Tries to create a converter that can convert from values of type fromType.
	 * Returns <code>null</code> if no converter could be created. Either
	 * toType or modelDescription can be <code>null</code>, but not both. The
	 * implementation of this method will iterate over the registered bind
	 * support factories in reverse order, passing the given arguments to
	 * {@link IBindSupportFactory#createConverter(Class, Class, Object)}. The
	 * first non-null converter will be returned. 
	 * @param fromType
	 * @param toType
	 * @param modelDescription
	 * @return an IConverter, or <code>null</code> if unsuccessful
	 */
	public IConverter createConverter(Class fromType, Class toType,
			Object modelDescription);
	/**
	 * Disposes of this data binding context and all updatable objects created
	 * in this context.
	 */
	public void dispose();
	/**
	 * Updates all target updatable objects to reflect the current state of the
	 * model updatable objects.
	 * 
	 */
	public void updateTargets();
	/**