hasrelationmanager

Checks only whether certain relation manager is available. To make it possible to make more generic code.

• sourcemanager
  Name of the source node-manager (defaults to 'object'). For convenience, one may also specify a node here (using $), in which case the nodes nodemanager is requested.
  
• destinationmanager
  Name of the destination node-manager (default to 'object'). For convenience, one may also specify a node here (using $), in which case the nodes nodemanager is requested.
  
• role
  Role of the relation manager.
  

• inverse

• cloud

• referid

• id

• context