code: def feed_key(self, key_press):
      self.keys.append(key_press)
  
imports: from __future__ import annotations
  import pytest
  from prompt_toolkit.input.vt100_parser import Vt100Parser
  from prompt_toolkit.keys import Keys
label_desc: Use image node_id 2 for calling the _ProcessorMock obj's underlying member method code with example usage: obj.feed_key(key_press) without return types