old_contents: """ Simphony engine module
  
  This module is dynamicaly populated at import with the
  registered plugins modules. Plugins modules need to be
  registered at the 'simphony.engine' entry point.
  """
  from ..extension import get_engine_manager
  from ..extension import create_wrapper
  
  
  __all__ = ['get_supported_engines', 'create_wrapper',
             'get_supported_engine_names']
  
  
  def get_supported_engine_names():
      """Show a list of supported engine names.
  
      Returns
      -------
      names: list
          a list of engine names
      """
      return get_engine_manager().get_supported_engine_names()
  
  
  def get_supported_engines():
      """Show a list of supported engines.
  
      Returns
      -------
      metadata: list
          a list of engine metadata objects
      """
      return get_engine_manager().get_supported_engines()
  
  
  def load_engine_extentions():
      """ Discover and load engine extension modules.
  
      """
      from stevedore import extension
      mgr = extension.ExtensionManager(
          namespace='simphony.engine',
          invoke_on_load=False)
      extensions = {}
      engine_manager = get_engine_manager()
      for ext in mgr.extensions:
          extensions[ext.name] = ext.plugin
          # Load engine metadata
          engine_manager.load_metadata(ext.plugin)
      return extensions
  
  
  # Populate the module namespace
  globals().update(load_engine_extentions())
  
  # cleanup
  del load_engine_extentions
  
new_contents: """ Simphony engine module
  
  This module is dynamicaly populated at import with the
  registered plugins modules. Plugins modules need to be
  registered at the 'simphony.engine' entry point.
  """
  from ..extension import get_engine_manager
  
  
  __all__ = ['get_supported_engines',
             'get_supported_engine_names']
  
  
  def get_supported_engine_names():
      """Show a list of supported engine names.
  
      Returns
      -------
      names: list
          a list of engine names
      """
      return get_engine_manager().get_supported_engine_names()
  
  
  def get_supported_engines():
      """Show a list of supported engines.
  
      Returns
      -------
      metadata: list
          a list of engine metadata objects
      """
      return get_engine_manager().get_supported_engines()
  
  
  def load_engine_extentions():
      """ Discover and load engine extension modules.
  
      """
      from stevedore import extension
      mgr = extension.ExtensionManager(
          namespace='simphony.engine',
          invoke_on_load=False)
      extensions = {}
      engine_manager = get_engine_manager()
      for ext in mgr.extensions:
          extensions[ext.name] = ext.plugin
          # Load engine metadata
          engine_manager.load_metadata(ext.plugin)
      return extensions
  
  
  # Populate the module namespace
  globals().update(load_engine_extentions())
  
  # cleanup
  del load_engine_extentions
  
subject: Remove create_wrapper from the API