Bug 127861 [DataBinding] Mark API provisional
bundles/org.eclipse.jface.databinding/src/org/eclipse/jface/internal/databinding/DataBindingContext.java
public String isPartiallyValid(Object value) {
							return null;
						}
						public String isValid(Object value) {
							return null;
						}
					};
				}
				IValidator dataTypeValidator = ValidatorRegistry.getDefault()
						.get(fromType, toType);
				if (dataTypeValidator == null) {
					throw new BindingException(
							"No IValidator is registered for conversions from " + fromType.getName() + " to " + toType.getName()); 
				}
				return dataTypeValidator;
			}
			public IConverter createConverter(Class fromType, Class toType,
					Object modelDescription) {
				if (toType == null) {
					return null;
				}
				if (fromType == toType) {
					return new IdentityConverter(fromType, toType);
				}
				if (ConversionFunctionRegistry.canConvertPair(fromType, toType)) {
					return new FunctionalConverter(fromType, toType);
				}
				
				
				if (toType.isAssignableFrom(fromType)