code: def __init__(self, src_data, dst_data):
      self.src_data = src_data
      self.dst_data = dst_data
  
imports: import collections
  import functools
  import io
  import os
  import warnings
  import dgl
  import numpy
  import scipy
  import torch
label_desc: Use image node_id 1 to create a new EdgeData object  with example: obj = EdgeData(src_data, dst_data)