class_docstr: Base class for the abstract InputSource. 
class_docstr_tok: ["Base","class","for","the","abstract","InputSource","."]
code: def _get_input_tensors(self):
      pass
  
imports: import copy
  from abc import ABCMeta, abstractmethod
  from contextlib import contextmanager
  import six
  import tensorflow
  from ..callbacks.base import CallbackFactory
  from ..tfutils.common import get_op_tensor_name
  from ..utils import logger
  from ..utils.argtools import call_only_once, memoized_method
  from ..compat import tfv1
label_desc: Use image node_id 2 for calling the InputSource obj's underlying member method code with example usage: obj._get_input_tensors() without return types