def __init__(self, groups_to_display=None):
self._groups_to_display = None<EOL>if groups_to_display is not None:<EOL><INDENT>self.groups_to_display = groups_to_display<EOL><DEDENT>
Create a GroupsToDisplay object

        :param groups_to_display: An array containing the unsubscribe groups
                                  that you would like to be displayed on the
                                  unsubscribe preferences page.
        :type groups_to_display: array of integers, optional