docs: def reverse_lookup(mnemonic: str):
      """
      Find instruction that matches the mnemonic.
  
      :param mnemonic: Mnemonic to match
      :return: :class:`Instruction` that matches or None
      """
      for i in get_insns():
          if "_mnemonic" in i.__dict__ and i._mnemonic == mnemonic:
              return i
  
      return None