[New] Added ListParameter.clearValue()

li.strolch.model/src/main/java/li/strolch/model/parameter/ListParameter.java

@@ -42,4 +42,9 @@ public interface ListParameter<E> extends Parameter<List<E>> {
 	 * @return true if the value was removed, false if it did not exist
 	 */
 	public boolean removeValue(E value);
+
+	/**
+	 * Clears the list of values
+	 */
+	public void clearValue();
 }

li.strolch.model/src/main/java/li/strolch/model/parameter/StringListParameter.java

@@ -121,6 +121,11 @@ public class StringListParameter extends AbstractParameter<List<String>> impleme
 		return this.value.remove(value);
 	}
 
+	@Override
+	public void clearValue() {
+		this.value.clear();
+	}
+
 	@Override
 	public String getType() {
 		return TYPE;