code: def loglike(self):
      return (self.src_data["Elog"] + self.dst_data["Elog"]).logsumexp(
          1
      )
  
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 2 for calling the EdgeData obj's underlying member method code with example usage: obj.loglike() and returns: unknown