code: def test_decoding(self):
      decoder = WordPiece()
      assert (
          decoder.decode(["My", "na", "##me", "is", "Jo", "##hn"])
          == "My name is John"
      )
      assert decoder.decode(["I", "'m", "Jo", "##hn"]) == "I'm John"
      decoder = WordPiece(prefix="__", cleanup=False)
      assert (
          decoder.decode(["My", "na", "__me", "is", "Jo", "__hn"])
          == "My name is John"
      )
      assert decoder.decode(["I", "'m", "Jo", "__hn"]) == "I 'm John"
  
imports: import json
  import pickle
  import pytest
  from tokenizers.decoders import CTC, BPEDecoder, ByteLevel, Decoder, Metaspace, Sequence, WordPiece, ByteFallback, Replace, Strip, Fuse
label_desc: Use image node_id 2 for calling the TestWordPiece obj's underlying member method code with example usage: obj.test_decoding() without return types