code: final public void setTeamId(int newId) {
  	if (teamId != -1) {
  	    throw new IllegalStateException("Team Id cannot be modified");
  	}
  	SecurityManager sm = System.getSecurityManager();
  	if (sm != null) {
  	    sm.checkPermission(new GamePermission("setTeamId"));
  	}
  	
  	teamId = newId;
      }
docs: Sets the team id. Can only be called once, otherwise it will throw an exception
  
  @param newId the team id of the bank