code: def __idents_matching(self, test_func):
      return tuple(
          ident
          for ident in self.get_identifiers()
          if test_func(self._table.symbols[ident])
      )
  
imports: import _symtable
  from _symtable import USE, DEF_GLOBAL, DEF_NONLOCAL, DEF_LOCAL, DEF_PARAM, DEF_IMPORT, DEF_BOUND, DEF_ANNOT, SCOPE_OFF, SCOPE_MASK, FREE, LOCAL, GLOBAL_IMPLICIT, GLOBAL_EXPLICIT, CELL
  import weakref
label_desc: Use image node_id 1 for calling the Function obj's underlying member method code with example usage: obj.__idents_matching(test_func) and returns: tuple