WP_Customize_Partial::render

	 *     @type string $base ID base.
	 *     @type array  $keys Keys for multidimensional array.
	 * }
	 */
	final public function id_data() {
		return $this->id_data;
	}

	/**
	 * Renders the template partial involving the associated settings.
	 *
	 * @since 4.5.0
	 *
	 * @param array $container_context Optional. Array of context data associated with the target container (placement).
	 *                                 Default empty array.
	 * @return string|array|false The rendered partial as a string, raw data array (for client-side JS template),
	 *                            or false if no render applied.
	 */
	final public function render( $container_context = array() ) {
		$partial  = $this;
		$rendered = false;

		if ( ! empty( $this->render_callback ) ) {
			ob_start();
			$return_render = call_user_func( $this->render_callback, $this, $container_context );
			$ob_render     = ob_get_clean();

			if ( null !== $return_render && '' !== $ob_render ) {
				_doing_it_wrong( __FUNCTION__, __( 'Partial render must echo the content or return the content string (or array), but not both.' ), '4.5.0' );
			}

			/*
			 * Note that the string return takes precedence because the $ob_render may just\
			 * include PHP warnings or notices.
			 */
			$rendered = null !== $return_render ? $return_render : $ob_render;
		}

		/**
		 * Filters partial rendering.
		 *
		 * @since 4.5.0
		 *
		 * @param string|array|false   $rendered          The partial value. Default false.
		 * @param WP_Customize_Partial $partial           WP_Customize_Setting instance.
		 * @param array                $container_context Optional array of context data associated with
		 *                                                the target container.
		 */