* @since 0.1
	 * @param array                $args         The field arguments.
	 * @param WP_Customize_Manager $wp_customize The customizer instance.
	 * @return array
	 */
	public function filter_setting_args( $args, $wp_customize ) {

		return $args;

	}

	/**
	 * Filter control args.
	 *
	 * @access public
	 * @since 0.1
	 * @param array                $args         The field arguments.
	 * @param WP_Customize_Manager $wp_customize The customizer instance.
	 * @return array
	 */
	public function filter_control_args( $args, $wp_customize ) {

		return $args;

	}

	/**
	 * Registers the setting.
	 *
	 * @access public
	 * @since 0.1
	 * @param WP_Customize_Manager $customizer The customizer instance.
	 * @return void
	 */
	public function add_setting( $customizer ) {

		$args = $this->args;

		// This is for postMessage purpose.
		// @see wp-content/plugins/kirki/kirki-packages/module-postmessage/src/Postmessage.php inside 'field_add_setting_args' method.
		$args['type'] = isset( $this->type ) ? $this->type : '';

		/**
		 * Allow filtering the arguments.
		 *
		 * @since 0.1
		 * @param array                $this->args The arguments.
		 * @param WP_Customize_Manager $customizer The customizer instance.
		 * @return array                           Return the arguments.
		 */
		$args = apply_filters( 'kirki_field_add_setting_args', $args, $customizer );

		if ( ! isset( $args['settings'] ) || empty( $args['settings'] ) ) {
			return;
		}

		$setting_id = $args['settings'];

		$args = [
			'type'                 => isset( $args['option_type'] ) ? $args['option_type'] : 'theme_mod', // 'type' here doesn't use the $args['type'] but instead checking the $args['option_type'].
			'capability'           => isset( $args['capability'] ) ? $args['capability'] : 'edit_theme_options',
			'theme_supports'       => isset( $args['theme_supports'] ) ? $args['theme_supports'] : '',
			'default'              => isset( $args['default'] ) ? $args['default'] : '',
			'transport'            => isset( $args['transport'] ) ? $args['transport'] : 'refresh',
			'sanitize_callback'    => isset( $args['sanitize_callback'] ) ? $args['sanitize_callback'] : '',
			'sanitize_js_callback' => isset( $args['sanitize_js_callback'] ) ? $args['sanitize_js_callback'] : '',
		];

		$settings_class = $this->settings_class ? $this->settings_class : null;

		if ( $settings_class ) {
			$customizer->add_setting( new $settings_class( $customizer, $setting_id, $args ) );
		} else {
			$customizer->add_setting( $setting_id, $args );
		}

	}

	/**
	 * Registers the control.
	 *
	 * @access public
	 * @since 0.1
	 * @param WP_Customize_Manager $wp_customize The customizer instance.
	 * @return void
	 */
	public function add_control( $wp_customize ) {

		$control_class = $this->control_class;

		// If no class-name is defined, early exit.
		if ( ! $control_class ) {
			return;
		}

		/**
		 * Allow filtering the arguments.
		 *
		 * @since 0.1
		 * @param array                $this->args   The arguments.
		 * @param WP_Customize_Manager $wp_customize The customizer instance.
		 * @return array                             Return the arguments.
		 */
		$args = apply_filters( 'kirki_field_add_control_args', $this->args, $wp_customize );

		$wp_customize->add_control( new $control_class( $wp_customize, $this->args['settings'], $args ) );

	}

}