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.

package de.intevation.flys.artifacts.model;

import de.intevation.flys.artifacts.model.WQKms;

/** A result that delivers WQKms. */
public interface WQKmsResult {
    public WQKms[] getWQKms();
}