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jplag.frontend.golang/src/main/java/de/jplag/golang/JPlagGoListener.java

@@ -67,7 +67,7 @@ public class JPlagGoListener extends GoParserBaseListener {
         transformToken(IMPORT_DECLARATION, context.getStart());
 
         // if the children contain TerminalNodes, then it must be '(' and ')'
-        Optional<TerminalNode> listStart = context.children.stream().filter(tree -> tree instanceof TerminalNode).map(TerminalNode.class::cast)
+        Optional<TerminalNode> listStart = context.children.stream().filter(TerminalNode.class::isInstance).map(TerminalNode.class::cast)
                 .findFirst();
         listStart.ifPresent(lParenTree -> transformToken(IMPORT_CLAUSE_BEGIN, lParenTree.getSymbol()));