code: def __getitem__(self, key: str) -> str:
      try:
          return self.mapping[key][1]
      except KeyError:
          raise KeyError(key)
  
file_path: llama.cpp/gguf-py/gguf/tensor_mapping.py
imports: from __future__ import annotations
  from typing import Sequence
  from .constants import MODEL_ARCH, MODEL_TENSOR, MODEL_TENSORS, TENSOR_NAMES
label_desc: Use image node_id 5 for calling the TensorNameMap obj's underlying member method code with example usage: obj.__getitem__(key) and returns: self