code: def _pre_md5_skip_on_check(self, src, rfile):
          # type: (Uploader, blobxfer.models.upload.LocalPath,
          #        blobxfer.models.azure.StorageEntity) -> None
          
          md5 = blobxfer.models.metadata.get_md5_from_metadata(rfile)
          key = blobxfer.operations.upload.Uploader.create_unique_id(src, rfile)
          with self._md5_meta_lock:
              self._md5_map[key] = (src, rfile)
          self._md5_offload.add_localfile_for_md5_check(
              key, None, str(src.absolute_path), md5, rfile.mode, src.view)
docs: Perform pre MD5 skip on check
          :param Uploader self: this
          :param blobxfer.models.upload.LocalPath src: local path
          :param blobxfer.models.azure.StorageEntity rfile: remote file