def isModeratorBitmask(bitmask): return util.getBit(bitmask, 2)
def isLeaderBitmask(bitmask): return util.getBit(bitmask, 3)
def isAdminBitmask(bitmask): return util.getBit(bitmask, 1)
def is_site_admin(self): return util.getBit(self.group_membership_bitmask, 1)