code: def save_examples_as_graphdefs(export_dir):
      tf.io.write_graph(
          graph_a.as_graph_def(),
          export_dir,
          "graph_a.pb",
          as_text=False,
      )
      tf.io.write_graph(
          graph_b.as_graph_def(),
          export_dir,
          "graph_b.pb",
          as_text=False,
      )
      tf.io.write_graph(
          main_graph.as_graph_def(),
          export_dir,
          "main_graph.pb",
          as_text=False,
      )
  
imports: import tensorflow
label_desc: Use image node_id 4 for calling a global function with example usage: save_examples_as_graphdefs(export_dir) without return types