How to use multiple adapters at same time?

Say I have the following application.js adapter:

import DS from 'ember-data';
import DataAdapterMixin from 'ember-simple-auth/mixins/data-adapter-mixin';
import ActiveModelAdapter from 'active-model-adapter';

export default DS.JSONAPIAdapter.extend(DataAdapterMixin, {
  authorizer: 'authorizer:devise'
});

How do I insert the activeModelAdapter into this for use? Not quite sure what the format and syntax needs to be.