content: import rasa.core
  import sys
  import warnings
  
  # this makes sure old code can still import from `rasa_core`
  # although the package has been moved to `rasa.core`
  sys.modules['rasa_core'] = rasa.core
  
  warnings.warn("The 'rasa_core' package hase been renamed. You should change "
                "your imports to use 'rasa.core' instead.", UserWarning)
  