code: def numpy(self) -> Tuple[np.ndarray, List[np.ndarray]]:
      # default implementation
      steps, vals_list = self.items_list()
      numpy_list = []
      for col_idx, vals in enumerate(vals_list):
          numpy_list.append(
              np.array(vals, dtype=self.arrays[col_idx].dtype)
          )
      return np.array(steps, np.intp), numpy_list
  
imports: from typing import Generic, Union, Tuple, TypeVar, Dict, Iterator, Any, List
  from itertools import islice
  import numpy
  import logging
  from aim.sdk.tracker import STEP_HASH_FUNCTIONS
  from aim.storage.treeview import TreeView
  from aim.storage.arrayview import ArrayView
  from aim.storage.context import Context
  from aim.storage.hashing import hash_auto
  from typing import TYPE_CHECKING
label_desc: Use image node_id 15 for calling the SequenceData obj's underlying member method code with example usage: obj.numpy() and returns: np,  numpy_list