#66: Joined - add support of Collection sub-types

dgroup · dgroup · commit e05ec02b3d83 · 2019-06-09T08:33:10.000+05:30
diff --git a/src/main/java/io/github/dgroup/term4j/arg/Joined.java b/src/main/java/io/github/dgroup/term4j/arg/Joined.java
@@ -42,7 +42,7 @@ public final class Joined<X> extends ArgEnvelope<Collection<X>> {
      * @param args All command-line arguments.
      * @param items The items to be merged into original value.
      */
-    public Joined(final Arg<Collection<X>> args, final X... items) {
+    public Joined(final Arg<? extends Collection<X>> args, final X... items) {
         this(args, new CollectionOf<>(items));
     }
 
@@ -51,7 +51,7 @@ public Joined(final Arg<Collection<X>> args, final X... items) {
      * @param args All command-line arguments.
      * @param items The items to be merged into original value.
      */
-    public Joined(final Arg<Collection<X>> args, final Collection<X> items) {
+    public Joined(final Arg<? extends Collection<X>> args, final Collection<X> items) {
         super(new Arg<Collection<X>>() {
             @Override
             public String label() {
