import com.google.web.bindery.requestfactory.shared.EntityProxy; //导入依赖的package包/类
@Override
public <P extends EntityProxy> Request<P> find(final EntityProxyId<P> proxyId) {
  return new AbstractRequest<BaseProxy, P>(this) {
    {
      this.requestContext.addInvocation(this);
    }

    @Override
    protected RequestData makeRequestData() {
      // This method is normally generated, hence the ugly constructor
      return new RequestData(Constants.FIND_METHOD_OPERATION, new Object[] {proxyId},
          this.propertyRefs, proxyId.getProxyClass(), null);
    }
  };
}