broken xml code in foreign source/imports is not being detected

I found out that a missing

tag in a requisition won't hurt OpenNMS while starting. But when you open the requisition menu, you will get an error which can be obtained in the logs.

Also I had a similiar issue with an import definition file (detectors/policies). It didn't start with

Instead of this there was just some text (due to a copy and paste failure). But it behaves identically to the described issue above.

Not sure if ONMS should not start with broken XML code in imports/foreignSource files, but the config tester tool should detect it.