code: def initializer(self, op):
      assert op is None or core.IsOperator(
          getattr(op, "type", None)
      ), "initializer expects an operator, got type: {}".format(
          type(op)
      )
      self._initializer = op
      if op is not None:
          self.shape = self._infer_shape_from_initializer()
  
imports: import logging
  from collections import namedtuple
  import numpy
  from caffe2.proto import caffe2_pb2
  from caffe2.python import core, schema, scope, utils, workspace
  from caffe2.python.layers.tags import TagContext
label_desc: Use image node_id 3 for calling the LayerParameter obj's underlying member method code with example usage: obj.initializer(op) without return types