Definitely fix swift impl

pmd-core/src/main/java/net/sourceforge/pmd/lang/ast/Node.java

@@ -67,7 +67,7 @@ public interface Node {
      */
     @Deprecated
     default void jjtOpen() {
-
+        // do nothing
     }
 
 
@@ -78,7 +78,7 @@ public interface Node {
      */
     @Deprecated
     default void jjtClose() {
-
+        // do nothing
     }
 
 

pmd-swift/src/main/antlr4/net/sourceforge/pmd/lang/swift/ast/Swift.g4

@@ -55,7 +55,7 @@ import net.sourceforge.pmd.lang.ast.impl.antlr4.*;
 
 options {
     contextSuperClass = AntlrBaseNode;
-    superClass = PmdBaseAntlrParser;
+    superClass = PmdAntlrParserBase;
 }
 
 topLevel : statements? EOF ;

pmd-swift/src/main/resources/category/swift/bestpractices.xml

@@ -11,6 +11,7 @@ Rules which enforce generally accepted best practices.
 
     <rule name="ProhibitedInterfaceBuilder"
           since="7.0"
+          language="swift"
           message="Creating views using Interface Builder should be avoided."
           class="net.sourceforge.pmd.lang.swift.rule.bestpractices.ProhibitedInterfaceBuilderRule"
           externalInfoUrl="http://pmd.github.io/pmd/pmd_rules_swift_bestpractices.html#prohibitedinterfacebuilder">
@@ -36,6 +37,7 @@ class ViewController: UIViewController {
 
     <rule name="UnavailableFunction"
           since="7.0"
+          language="swift"
           message="Unimplemented functions should be marked as unavailable."
           class="net.sourceforge.pmd.lang.swift.rule.bestpractices.UnavailableFunctionRule"
           externalInfoUrl="http://pmd.github.io/pmd/pmd_rules_swift_bestpractices.html#unavailablefunction">