old_contents: from .variational_strategy import VariationalStrategy
  from .mvn_variational_strategy import MVNVariationalStrategy
  
  
  
  __all__ = [
      VariationalStrategy,
      MVNVariationalStrategy,
  ]
  
new_contents: from .variational_strategy import VariationalStrategy
  from .mvn_variational_strategy import MVNVariationalStrategy
  
  
  __all__ = [
      VariationalStrategy,
      MVNVariationalStrategy,
  ]
  
subject: Fix lint