'Returns the contents of this object, i.e. all
objects that has this object set as its location.
This should be publically available.
Args:
exclude (Object): Object to exclude from returned
contents list
Returns:
contents (list): List of contents of this Object.
Notes:
Also available as the `contents` property.'

def contents_get(self, exclude=None):

    con = self.contents_cache.get(exclude=exclude)
    return con
