old_contents: from .doc import Doc
  from .token import Token
  from .span import Span
  from ._serialize import DocBin
  from .morphanalysis import MorphAnalysis
  
  __all__ = ["Doc", "Token", "Span", "DocBin", "MorphAnalysis"]
  
new_contents: from .doc import Doc
  from .token import Token
  from .span import Span
  from .span_group import SpanGroup
  from ._serialize import DocBin
  from .morphanalysis import MorphAnalysis
  
  __all__ = ["Doc", "Token", "Span", "SpanGroup", "DocBin", "MorphAnalysis"]
  
subject: Fix SpanGroup import (#7182)