'Apply manipulators to an incoming SON object before it gets stored.
:Parameters:
- `son`: the son object going into the database
- `collection`: the collection the son object is being saved in'

def _fix_incoming(self, son, collection):

    son = self._apply_incoming_manipulators(son, collection)
    son = self._apply_incoming_copying_manipulators(son, collection)
    return son
