code: def test_from_email_unparsed(self):
      with pytest.raises(ExceptionGroup) as exc_info:
          metadata.Metadata.from_email("Hello: PyPA")
  
          assert len(exc_info.exceptions) == 1
          assert isinstance(
              exc_info.exceptions[0], metadata.InvalidMetadata
          )
  
imports: import pathlib
  import pytest
  from packaging import metadata, requirements, specifiers, utils, version
  from packaging.metadata import ExceptionGroup
label_desc: Use image node_id 3 for calling the TestMetadata obj's underlying member method code with example usage: obj.test_from_email_unparsed() without return types