How to get documentLoader?
import documentLoader from 'fontoxml-remote-documents/src/documentLoader.js'
The DocumentLoader manages and de-duplicates load requests for documents and adds corresponding instances to the DocumentsManager.
Documents in the CMS are identified to by their
documentId in the CMS connectors API. As a loaded document is assigned a DocumentId to identify its local instance, other APIs generally refer to the CMS ID as the RemoteDocumentId.
Request the document with the given ID to be loaded
Request the document referred to by the given ID to be loaded, passing the given referrer to the CMS if a request is sent.