Read/Write configuration from plugin

Good morning! I am working on a plugin for Camunda Modeler and I have a problem accessing the modeler configuration.
I saw this plugin which uses a new version of camunda-modeler-plugin-helpers that allows to create React components to the modeler.
Awesome!
I created my new plugin and added a new button to the toolbar, which is just a “enable/disable features” button. Now I would like to get the configuration from my bpmn-js plugin, and I am stuck on it.
Maybe it’s a stupid question but how can I get that simple ‘key/value’ configuration from the bpmnjs plugin part?