code: def release_tcp_port(self, port, project):
          
  
          if port in self._used_tcp_ports:
              self._used_tcp_ports.remove(port)
              project.remove_tcp_port(port)
              log.debug("TCP port {} has been released".format(port))
docs: Release a specific TCP port number
  
          :param port: TCP port number
          :param project: Project instance