这个定义说明当配置文件中设置模型名字为pointpillar时，该模型的代码位于pcdet/modeld/detectors中如下图所示：In 1940, Agatha’s daughter Rosalind married Hubert Prichard and gave delivery to a son, Mathew, in 1943. Max experienced moved to a publish in Libya, but Agatha was a doting grandmother and often went to ass