code: func (c *GRPCConnection) Close() {
  	if !c.setClosed() {
  		logger.Debug("Already closed")
  		return
  	}
  
  	logger.Debug("Releasing connection....")
  	c.commManager.ReleaseConn(c.conn)
  
  	logger.Debug("... connection successfully closed.")
  }
docs: // Close closes the connection