API to add and retrieve key/value pairs for a User (JANUS-33) * Add serialization configuration to Attribute entity.
API to add and retrieve key/value pairs for a User (JANUS-33)
* Add serialization configuration to Attribute entity.

cambridgeuniversity/ice-janus,cambridgeuniversity/ice-janus,pdawczak/ice-janus,pdawczak/ice-janus,pdawczak/ice-janus,cambridgeuniversity/ice-janus