class_docstr: Molecular featurization object for weave convolutions.
  
  These objects are produced by WeaveFeaturizer, and feed into
  WeaveModel. The underlying implementation is inspired by [1]_.
  
  
  References
  ----------
  .. [1] Kearnes, Steven, et al. "Molecular graph convolutions: moving beyond fingerprints." Journal of computer-aided molecular design 30.8 (2016): 595-608.
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code: def get_pair_edges(self):
      return self.pair_edges
  
imports: import csv
  import random
  import numpy
label_desc: Use image node_id 2 for calling the WeaveMol obj's underlying member method code with example usage: obj.get_pair_edges() and returns: self