code: def __getitem__(self, idx: Union[int, slice]) -> Any:
      if isinstance(idx, slice):
          raise NotImplementedError
      return self.tree[idx]
  
imports: import numpy
  from typing import Any, Iterator, List, Tuple, Union
  from aim.storage.treeview import TreeView
  from aim.storage.arrayview import ArrayView
label_desc: Use image node_id 10 for calling the TreeArrayView obj's underlying member method code with example usage: obj.__getitem__(idx) and returns: self