code: def _make_default_edge_block_opt(edge_block_opt):
      """Default options to be used in the EdgeBlock of a generic GraphNetwork."""
      edge_block_opt = (
          dict(edge_block_opt.items()) if edge_block_opt else {}
      )
      for k, v in _DEFAULT_EDGE_BLOCK_OPT.items():
          edge_block_opt[k] = edge_block_opt.get(k, v)
      return edge_block_opt
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from graph_nets import _base
  from graph_nets import blocks
  import tensorflow
label_desc: Use image node_id 1 for calling a global function with example usage: _make_default_edge_block_opt(edge_block_opt) and returns: edge_block_opt