code: public void setForcedUser(int contextId, User user) {
  		if (user != null)
  			this.contextForcedUsersMap.put(contextId, user);
  		else
  			this.contextForcedUsersMap.remove(contextId);
  		this.updateForcedUserModeToggleButtonState();
  	}
docs: Sets the forced user for a context.
  
  @param contextId the context id
  @param user the user