new_contents: from .._version import get_versions
  
  __all__ = ["print_tohu_version", "identity"]
  
  
  def print_tohu_version():  # pragma: no cover
      """
      Convenience helper function to print the current tohu version.
      """
      print(f"Tohu version: {get_versions()['version']}")
  
  
  def identity(x):
      """
      Helper function which returns its argument unchanged.
      That is, `identity(x)` returns `x` for any input `x`.
      """
      return x
  
subject: Add utility functions