code: def passthrough(explainer, op, *grads):
      if op.type.startswith("shap_"):
          op.type = op.type[5:]
      return explainer.orig_grads[op.type](op, *grads)
  
imports: import warnings
  import numpy
  from packaging import version
  from ...utils._exceptions import DimensionError
  from .._explainer import Explainer
  from ..tf_utils import _get_graph, _get_model_inputs, _get_model_output, _get_session
  from .deep_utils import _check_additivity
label_desc: Use image node_id 17 for calling a global function with example usage: passthrough(explainer, op) and returns: explainer