String src = source.getGroupId();
        if (src != null) {
            if (sourceDominant || target.getGroupId() == null) {
                target.setGroupId(src);
                target.setLocation("groupId", source.getLocation("groupId"));
            }
        }
    }

    protected void mergeModel_ArtifactId(
            Model target, Model source, boolean sourceDominant, Map<Object, Object> context) {

    }

    /**
     * @param groupId the group ID of the plugin in the repository
     * @param artifactId the artifact ID of the reporting plugin in the repository
     * @return the key of the plugin, ie {@code groupId:artifactId}
     */
    public static String constructKey(String groupId, String artifactId) {
        return groupId + ":" + artifactId;
    }

            ]]>