code: def get_nnp_input_size(self):
      network = self.nnp.g.default_graph()
      input_var = network.variables[network.inputs[0]]
      nnp_input_size = input_var.shape[2:]
  
      return nnp_input_size
  
file_path: nnabla/python/src/nnabla/models/object_detection/base.py
imports: from __future__ import absolute_import
  from nnabla.utils.nnp_graph import NnpLoader
  from ..utils import *
label_desc: Use image node_id 7 for calling the ObjectDetection obj's underlying member method code with example usage: obj.get_nnp_input_size() and returns: nnp_input_size