code: def test_instantiate(self):
      assert Metaspace() is not None
      assert Metaspace(replacement="-") is not None
      with pytest.raises(
          ValueError, match="expected a string of length 1"
      ):
          Metaspace(replacement="")
      assert Metaspace(add_prefix_space=True) is not None
      assert isinstance(Metaspace(), PreTokenizer)
      assert isinstance(Metaspace(), Metaspace)
      assert isinstance(
          pickle.loads(pickle.dumps(Metaspace())), Metaspace
      )
  
imports: import json
  import pickle
  import pytest
  from tokenizers.pre_tokenizers import BertPreTokenizer, ByteLevel, CharDelimiterSplit, Digits, Metaspace, PreTokenizer, Punctuation, Sequence, Split, UnicodeScripts, Whitespace, WhitespaceSplit
label_desc: Use image node_id 1 for calling the TestMetaspace obj's underlying member method code with example usage: obj.test_instantiate() without return types