private void SaveAttributes( int entityTypeId, string qualifierColumn, string qualifierValue, ViewStateList<Attribute> viewStateAttributes, RockContext rockContext )
        {
            // Get the existing attributes for this entity type and qualifier value
            var attributeService = new AttributeService( rockContext );
            var attributes = attributeService.Get( entityTypeId, qualifierColumn, qualifierValue );

            // Delete any of those attributes that were removed in the UI
            var selectedAttributeGuids = viewStateAttributes.Select( a => a.Guid );
            foreach ( var attr in attributes.Where( a => !selectedAttributeGuids.Contains( a.Guid ) ) )
            {
                attributeService.Delete( attr );
                rockContext.SaveChanges();
                Rock.Web.Cache.AttributeCache.Flush( attr.Id );
            }

            // Update the Attributes that were assigned in the UI
            foreach ( var attributeState in viewStateAttributes )
            {
                Helper.SaveAttributeEdits( attributeState, entityTypeId, qualifierColumn, qualifierValue, rockContext );
            }
        }
        private void SaveAttributes( int entityTypeId, string qualifierColumn, string qualifierValue, ViewStateList<Attribute> viewStateAttributes,
            AttributeService attributeService, AttributeQualifierService qualifierService, CategoryService categoryService )
        {
            // Get the existing attributes for this entity type and qualifier value
            var attributes = attributeService.Get( entityTypeId, qualifierColumn, qualifierValue );

            // Delete any of those attributes that were removed in the UI
            var selectedAttributeGuids = viewStateAttributes.Select( a => a.Guid );
            foreach ( var attr in attributes.Where( a => !selectedAttributeGuids.Contains( a.Guid ) ) )
            {
                Rock.Web.Cache.AttributeCache.Flush( attr.Id );

                attributeService.Delete( attr, CurrentPersonId );
                attributeService.Save( attr, CurrentPersonId );
            }

            // Update the Attributes that were assigned in the UI
            foreach ( var attributeState in viewStateAttributes )
            {
                Helper.SaveAttributeEdits( attributeState, attributeService, qualifierService, categoryService,
                    entityTypeId, qualifierColumn, qualifierValue, CurrentPersonId );
            }
        }