GETRESOURCECONTENT on a session-based resource crashes when FORMAT = application/json

[jng]

Invoke a GETRESOURCECONTENT mapagent operation on a session-based resource using the FORMAT of application/json.

The mapagent handler will crash.

This crash currently makes it impossible to dynamically load a Fusion ApplicationDefinition from the client side using an Anonymous session id.

This doesn't happen if it is a library-based resource id, nor does it happen with the FORMAT of text/xml