You can use this hook to integrate Liferay and its Documents and Media functionality with Documentum. Before configuring Documentum, you must install this app. To use this hook, set. If you are using Documentum, there are additional settings that must be configured in the and documentum-hook/docroot/WEB-INF/src/portlet.properties files.This app installs as a new Repository Type option in the Documents and Media Library.