WP_REST_Settings_Controller::get_item_schema()
Method: Retrieves the site setting schema, conforming to JSON Schema.
Source: wp-includes/rest-api/endpoints/class-wp-rest-settings-controller.php:275
WP_REST_Settings_Controller::sanitize_callback()
Method: Custom sanitize callback used for all options to allow the use of ‘null’.
Source: wp-includes/rest-api/endpoints/class-wp-rest-settings-controller.php:315
WP_REST_Settings_Controller::set_additional_properties_to_false()
Method: Recursively add additionalProperties = false to all objects in a schema if no additionalProperties setting is specified.
Source: wp-includes/rest-api/endpoints/class-wp-rest-settings-controller.php:337