GetInterface(LegionIdType, char *ObjName);
Retrieve all of the method signatures for a Legion object.
IdType = Flag indicating whether parameter is a LOID or a
context path name.
ObjName = The context path name or the LOID of the object to
retrieve the interface for.
A NULL terminated list of the string representations of the
method's which are currently part of the indicated object's interface.
The user is responsible for "free"ing each returned
signature in the list as well as for "free"ing the list itself.