code: def _emoji_regex():
      """Returns regexp to detect emoji characters.
  
      Generated from https://unicode.org/emoji/charts/full-emoji-list.html,
      https://unicode.org/Public/emoji/13.0/emoji-sequences.txt.
      """
      char_class = "".join(
          [
              "[",
              "\u203c",
              "\u2049",
              "\u2139",
              "\u2194",
              "-",
              "\u2199",
              "\u21a9",
              "\u21aa",
              "\u231a",
              "\u231b",
              "\u2328",
              "\u23cf",
              "\u23e9",
              "-",
              "\u23f3",
              "\u23f8",
              "-",
              "\u23fa",
              "\u24c2",
              "\u25aa",
              "\u25ab" "\u25b6",
              "\u25c0",
              "\u25fb",
              "-",
              "\u25fe",
              "\u2600",
              "-",
              "\u26ff",
              "\u2702",
              "\u2705" "\u2708",
              "-",
              "\u270d",
              "\u270f",
              "\u2712",
              "\u2714",
              "\u2716",
              "\u271d",
              "\u2721",
              "\u2728",
              "\u2733",
              "\u2734",
              "\u2744",
              "\u2747",
              "\u274c",
              "\u274e",
              "\u2753",
              "-",
              "\u2755",
              "\u2757",
              "\u2763",
              "\u2764",
              "\u2795",
              "-",
              "\u2797",
              "\u2934",
              "\u2935",
              "\u2b05",
              "-",
              "\u2b07",
              "\u2b1b",
              "\u2b1c",
              "\u2b50",
              "\u2b55",
              "\u3030",
              "\u303d",
              "\u3297",
              "\u3299",
              "\U0001f004",
              "\U0001f0cf",
              "\U0001f170",
              "\U0001f171",
              "\U0001f17e",
              "\U0001f17f",
              "\U0001f18e",
              "\U0001f191",
              "-",
              "\U0001f19a",
              "\U0001f1e6",
              "-",
              "\U0001f1ff",
              "\U0001f201",
              "\U0001f202",
              "\U0001f21a",
              "\U0001f22f",
              "\U0001f232",
              "-",
              "\U0001f23a",
              "\U0001f250",
              "\U0001f251",
              "\U0001f300",
              "-",
              "\U0001f6ff",
              "\U0001f900",
              "-",
              "\U0001f9ff",
              "\U0001fa70",
              "-",
              "\U0001fa74",
              "\U0001fa78",
              "-",
              "\U0001fa7a",
              "\U0001fa80",
              "-",
              "\U0001fa86",
              "\U0001fa90",
              "-",
              "\U0001faa8",
              "\U0001fab0",
              "-",
              "\U0001fab6",
              "\U0001fac0",
              "-",
              "\U0001fac2",
              "\U0001fad0",
              "-",
              "\U0001fad6",
              "]",
          ]
      )  # pyformat:disable
      return ".*" + char_class + ".*"
  
file_path: text/tensorflow_text/python/ops/wordshape_ops.py
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import enum
  import re
  from tensorflow.python.framework import ops
  from tensorflow.python.ops import array_ops_stack
  from tensorflow.python.ops import string_ops
label_desc: Use image node_id 2 for calling a global function with example usage: _emoji_regex() and returns: unknown