code: def add_to_package_numpy(self, root, ndarray, node_path, target, source_path, transform, custom_meta):
          
          filehash = self.save_numpy(ndarray)
          metahash = self.save_metadata(custom_meta)
          self._add_to_package_contents(root, node_path, [filehash], target, source_path, transform, metahash)
docs: Save a Numpy array to the store.