RRC + RPE: How to get the schema for the modulebaselines?

I figured out how to include a 'version' history of a module into a document.
It is now described in https://jazz.net/wiki/bin/view/Main/RRCReportableRestAPI#Artifact_types_in_version_3_AN1

But I struggle to get the schema definition of the result so that I can use the result within RPE.
I request the schema via following URL:
https://inst01.rth-de.ihost.com/rm/modulebaselines?metadata=schema&accept=*&private=true

the result is:

<rdf:RDF

    xmlns:dcterms="http://purl.org/dc/terms/"

    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"

    xmlns:h="http://www.w3.org/TR/REC-html40"

    xmlns:xs="http://schema.w3.org/xs/"

    xmlns:rm="http://www.ibm.com/xmlns/rdm/rdf/"

    xmlns:dc="http://purl.org/dc/elements/1.1/"

    xmlns:jfs="http://jazz.net/xmlns/foundation/1.0/">

  <rm:BaselineMetadata rdf:about=""/>

</rdf:RDF>

But I am too dum.. to check what to do with that, it is not a schema definition.

Any hint appreciated.