code: def is_generic_union(tp):
      """Returns true if `tp` is a parameterized typing.Union value."""
      return (
          tp is not typing.Union
          and getattr(tp, "__origin__", None) is typing.Union
      )
  
imports: import collections.abc
  import typing
label_desc: Use image node_id 1 for calling a global function with example usage: is_generic_union(tp) and returns: unknown