code: def test_state_methods_with_buffer_state(self):
      # euc_jis_2004 stores state as a buffer of pending bytes
      encoder = codecs.getincrementalencoder("euc_jis_2004")()
  
      initial_state = encoder.getstate()
      self.assertEqual(encoder.encode("\u00e6\u0300"), b"\xab\xc4")
      encoder.setstate(initial_state)
      self.assertEqual(encoder.encode("\u00e6\u0300"), b"\xab\xc4")
  
      self.assertEqual(encoder.encode("\u00e6"), b"")
      partial_state = encoder.getstate()
      self.assertEqual(encoder.encode("\u0300"), b"\xab\xc4")
      encoder.setstate(partial_state)
      self.assertEqual(encoder.encode("\u0300"), b"\xab\xc4")
  
imports: import _multibytecodec
  import codecs
  import io
  import sys
  import textwrap
  import unittest
  from test import support
  from test.support import os_helper
  from test.support.os_helper import TESTFN
label_desc: Use image node_id 4 for calling the Test_IncrementalEncoder obj's underlying member method code with example usage: obj.test_state_methods_with_buffer_state() without return types