nonsie

<?php

// Import arbitrary config from a variable.
$config = \Drupal::service('config.factory')->getEditable('filter.format.basic_html');
$config->setData($data)->save();

// Or, re-import the default config for a module or profile, etc.
\Drupal::service('config.installer')->installDefaultConfig('module', 'my_custom_module');

// Or, import YAML config an arbitrary directory.

nonsie

A big thanks goes out to Sandeep Panda and his blog showing how to build an autocomplete for an Angular JS application.

http://www.htmlxprs.com/post/32/creating-an-angularjs-autocomplete-tag-input-widget