Make marker class public

org.hl7.fhir.validation.cli/src/main/java/Marker.java

@@ -1,3 +1,22 @@
-class Marker {
+/*-
+ * #%L
+ * org.hl7.fhir.validation.cli
+ * %%
+ * Copyright (C) 2014 - 2019 Health Level 7
+ * %%
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * #L%
+ */
+public class Marker {
   // This class is just here to force a javadoc build in order to satisfy maven central
 }