Merge branch 'master' into 7.0.x

pmd-core/src/main/java/net/sourceforge/pmd/lang/ast/impl/javacc/AbstractJjtreeNode.java

@@ -44,7 +44,7 @@ public abstract class AbstractJjtreeNode<N extends Node> extends AbstractNode {
 
     @Override
     @SuppressWarnings("unchecked")
-    public NodeStream<N> children() {
+    public NodeStream<? extends N> children() {
         return (NodeStream<N>) super.children();
     }
 }

pmd-java/src/main/java/net/sourceforge/pmd/lang/java/ast/JavaNode.java

@@ -79,7 +79,7 @@ public interface JavaNode extends ScopedNode, TextAvailableNode {
 
 
     @Override
-    NodeStream<JavaNode> children();
+    NodeStream<? extends JavaNode> children();
 
 
     @InternalApi

pmd-jsp/src/main/java/net/sourceforge/pmd/lang/jsp/ast/JspNode.java

@@ -33,5 +33,5 @@ public interface JspNode extends Node {
 
 
     @Override
-    NodeStream<JspNode> children();
+    NodeStream<? extends JspNode> children();
 }

pmd-modelica/src/main/java/net/sourceforge/pmd/lang/modelica/ast/ModelicaNode.java

@@ -36,5 +36,5 @@ public interface ModelicaNode extends Node {
 
 
     @Override
-    NodeStream<ModelicaNode> children();
+    NodeStream<? extends ModelicaNode> children();
 }

pmd-plsql/src/main/java/net/sourceforge/pmd/lang/plsql/ast/PLSQLNode.java

@@ -37,5 +37,5 @@ public interface PLSQLNode extends Node, ScopedNode {
 
 
     @Override
-    NodeStream<PLSQLNode> children();
+    NodeStream<? extends PLSQLNode> children();
 }

pmd-scala/src/main/java/net/sourceforge/pmd/lang/scala/ast/AbstractScalaNode.java

@@ -35,7 +35,7 @@ abstract class AbstractScalaNode<T extends Tree> extends AbstractNode implements
 
     @Override
     @SuppressWarnings("unchecked")
-    public NodeStream<ScalaNode<?>> children() {
+    public NodeStream<? extends ScalaNode<?>> children() {
         return (NodeStream<ScalaNode<?>>) super.children();
     }
 

pmd-scala/src/main/java/net/sourceforge/pmd/lang/scala/ast/ScalaNode.java

@@ -63,5 +63,5 @@ public interface ScalaNode<T extends Tree> extends Node {
 
 
     @Override
-    NodeStream<ScalaNode<?>> children();
+    NodeStream<? extends ScalaNode<?>> children();
 }

pmd-visualforce/src/main/java/net/sourceforge/pmd/lang/vf/ast/VfNode.java

@@ -35,5 +35,5 @@ public interface VfNode extends Node {
 
 
     @Override
-    NodeStream<VfNode> children();
+    NodeStream<? extends VfNode> children();
 }

pmd-vm/src/main/java/net/sourceforge/pmd/lang/vm/ast/VmNode.java

@@ -33,6 +33,6 @@ public interface VmNode extends Node {
 
 
     @Override
-    NodeStream<VmNode> children();
+    NodeStream<? extends VmNode> children();
 
 }