#127 - setting properties not defined in type definition
•JSR168 allows portlets to set properties that do not currently exist
•WSRP requires Consumers to only set properties that are described.
•v0.8 added “While it is possible this set of properties change with time (entity dynamically creates new properties), Producers/entities SHOULD make the returned modelDescription as complete [static] as possible.” in section 7.7.
–Equivalent language at EntityDescription level