class_docstr: A container for managing functions.
class_docstr_tok: ["A","container","for","managing","functions","."]
code: def __len__(self):
      return len(self._primary)
  
file_path: tensorflow/tensorflow/core/function/polymorphism/function_cache.py
imports: import collections
  from typing import Any, NamedTuple, Optional
  from tensorflow.core.function.polymorphism import function_type
  from tensorflow.core.function.polymorphism import type_dispatch
label_desc: Use image node_id 8 for calling the FunctionCache obj's underlying member method code with example usage: obj.__len__() and returns: len