code: def available(self, context):
  	
  		
  		if self.__available is None:
  			state = self.__inst.state(context)
  			self.__available = state is not None and state != "not_created"
  		return self.__available
docs: Check availability.
  		
  		:param resort.engine.execution.Context context:
  		   Current execution context.
  		:rtype:
  		   bool
  		:return:
  		   Availability value.