code: def __call__(self, graph):
      self.label_edges(graph)
      return graph
  
file_path: typedb-ml/typedb_ml/pytorch_geometric/transform/binary_link_prediction.py
imports: import networkx
  from typedb_ml.networkx.iterate import multidigraph_edge_data_iterator
  from typedb_ml.typedb.type import get_edge_type_triplets, reverse_edge_type_triplets
label_desc: Use image node_id 2 for calling the LinkPredictionLabeller obj's underlying member method code with example usage: obj.__call__(graph) and returns: graph