NPE FlowPropertyDefinitionBuilder.merge()
allow a class to be FlowPropertyValueProvider and a FlowPropertyValuePersister with the properties being persisted not being the same as the properties being provided. This is useful when a valueprovider wants to provide a value that is a default and is not to be saved unless the default is assigned to the 'real' property.
FlowPropertyProviderWithValues.getPropertyWithDefinition(FlowPropertyDefinition flowPropertyDefinition) declared - speeds up execution