Introduce a new FixingsFacet to add save access to the current Km Values which are accessed by a String like a map must be checked for null. The new FixingsFacet adds a getCurrentKm method that abstracts the direct access to the CallContext and always returns a valid double value.

<?xml version="1.0" encoding="UTF-8" ?>
<rest-server>
    <!--  The port which the ArtifactDatabase (ArtifactServer) will bind to. -->
    <port>8999</port>
    <listen>localhost</listen>
</rest-server>