old_contents: """
  Defines the modules for interfacing with CoNLL sentences as trees. This
  is a utility module which when provided a Sentence constructs the appropriate
  or corresponding tree structure.
  """
  
new_contents: """
  Defines a tree data structure for internal use within pyconll. This module's
  logic is not intended to be used outside of pyconll, and is exposed here only
  so that pyconll methods that expose the Tree data structure will have
  appropriate documentation.
  """
  
  __all__ = ['tree']
  
  from .tree import Tree
  
subject: Update tree package __init__ to match other subpackages.