code: def _parse_constant_value(node):
      attr = _collect_attributes(node)
      value = attr["value"]
      return value
  
file_path: OMLT/src/omlt/io/onnx_parser.py
imports: import math
  import numpy
  from onnx import numpy_helper
  from omlt.neuralnet.layer import ConvLayer2D, DenseLayer, IndexMapper, InputLayer, PoolingLayer2D
  from omlt.neuralnet.network_definition import NetworkDefinition
label_desc: Use image node_id 2 for calling a global function with example usage: _parse_constant_value(node) and returns: value