parameters: (meta_graph_def, signature_def_key)
return_statement: return meta_graph_def.signature_def[signature_def_key]
docstring: Utility function to get a SignatureDef protocol buffer by its key.
  
    Args:
      meta_graph_def: MetaGraphDef protocol buffer with the SignatureDefMap to
        look up.
      signature_def_key: Key of the SignatureDef protocol buffer to find in the
        SignatureDefMap.
  
    Returns:
      A SignatureDef protocol buffer corresponding to the supplied key, if it
      exists.
  
    Raises:
      ValueError: If no entry corresponding to the supplied key is found in the
      SignatureDefMap of the MetaGraphDef.
docstring_summary: Utility function to get a SignatureDef protocol buffer by its key.
docstring_tokens: Utility function to get a SignatureDef protocol buffer by its key .
function: def get_signature_def_by_key(meta_graph_def, signature_def_key):
    """Utility function to get a SignatureDef protocol buffer by its key.
  
    Args:
      meta_graph_def: MetaGraphDef protocol buffer with the SignatureDefMap to
        look up.
      signature_def_key: Key of the SignatureDef protocol buffer to find in the
        SignatureDefMap.
  
    Returns:
      A SignatureDef protocol buffer corresponding to the supplied key, if it
      exists.
  
    Raises:
      ValueError: If no entry corresponding to the supplied key is found in the
      SignatureDefMap of the MetaGraphDef.
    """
    if signature_def_key not in meta_graph_def.signature_def:
      raise ValueError("No SignatureDef with key '%s' found in MetaGraphDef." %
                       signature_def_key)
    return meta_graph_def.signature_def[signature_def_key]
function_tokens: def get_signature_def_by_key ( meta_graph_def , signature_def_key ) : if signature_def_key not in meta_graph_def . signature_def : raise ValueError ( "No SignatureDef with key '%s' found in MetaGraphDef." % signature_def_key ) return meta_graph_def . signature_def [ signature_def_key ]