code: @Override
  	public void cleanupConnection(ConnectionHandle oldHandle, ConnectionHandle newHandle) {
  		this.threadFinalizableRefs.remove(oldHandle);
  		this.threadWatch(newHandle);
  	}
docs: /* (non-Javadoc)
  @see com.jolbox.bonecp.AbstractConnectionStrategy#cleanupConnection(com.jolbox.bonecp.ConnectionHandle)