http://elixir.ematia.de/trac/browser/elixir/trunk/elixir/entity.py#L1082)
Example: user = get_object_or_404(model.User, id = 1)
"""
http://elixir.ematia.de/trac/browser/elixir/trunk/elixir/entity.py#L1082)
Example: user = get_object_or_404(model.User, id = 1)
"""