def METHOD_NAME(self):
    """
    Example persistent_store_settings method.
    """
    ps_settings = (
        # Connection only, no database
        PersistentStoreConnectionSetting(
            name="primary",
            description="Connection with superuser role needed.",
            required=True,
        ),
        # Connection only, no database
        PersistentStoreConnectionSetting(
            name="creator", description="Create database role only.", required=False
        ),
        # Spatial database
        PersistentStoreDatabaseSetting(
            name="spatial_db",
            description="for storing important spatial stuff",
            required=True,
            initializer="appsettings.model.init_spatial_db",
            spatial=True,
        ),
        # Non-spatial database
        PersistentStoreDatabaseSetting(
            name="temp_db",
            description="for storing temporary stuff",
            required=False,
            initializer="appsettings.model.init_temp_db",
            spatial=False,
        ),
    )
    return ps_settings