code: def get_all_filters():
      """Return a generator of all filter names."""
      for name in FILTERS:
          yield name
      for name, _ in find_plugin_filters():
          yield name
  
imports: import re
  from pygments.token import String, Comment, Keyword, Name, Error, Whitespace, string_to_tokentype
  from pygments.filter import Filter
  from pygments.util import get_list_opt, get_int_opt, get_bool_opt, get_choice_opt, ClassNotFound, OptionError, text_type, string_types
  from pygments.plugin import find_plugin_filters
label_desc: Use image node_id 3 for calling a global function with example usage: get_all_filters() without return types