def setRemoveAction(self, action):
if action not in ('<STR_LIT>', '<STR_LIT>'):<EOL><INDENT>raise orb.errors.ValidationError('<STR_LIT>')<EOL><DEDENT>else:<EOL><INDENT>self.__removeAction = action<EOL><DEDENT>
Sets the remove action that should be taken when a model is removed from the collection generated by
this reverse lookup.  Valid actions are "unset" or "delete", any other values will raise an exception.

:param action: <str>