code: def resolve(node, source_info, graphs):
      """Resolves reaching definitions for each symbol.
  
      Args:
        node: ast.AST
        source_info: transformer.SourceInfo
        graphs: Dict[ast.FunctionDef, cfg.Graph]
      Returns:
        ast.AST
      """
      visitor = TreeAnnotator(source_info, graphs)
      node = visitor.visit(node)
      return node
  
imports: import gast
  from nvidia.dali._autograph.pyct import anno
  from nvidia.dali._autograph.pyct import cfg
  from nvidia.dali._autograph.pyct import transformer
label_desc: Use image node_id 1 for calling a global function with example usage: resolve(node, source_info, graphs) and returns: node