Multibranch pipeline + remote jenkinsfile plugin

“I have a ‘multibranch pipeline’ with the ‘remote Jenkinsfile’ plugin. This plugin allows you to separate the application source code and pipeline files. You can call a remote repository where you have the Jenkinsfiles. So far so good. Now I need to load a properties file in the Jenkinsfile, and this properties file is located in the Jenkinsfile repository. When examining the workspace, I don’t find the Jenkinsfile repository; I only see the app repository. Is there any way to load the properties file for the Jenkinsfile?”