void (@NotNull StringBuilder buf, @NotNull RefMethod refMethod) { List<RefFunctionalExpression> functionalExpressions = ContainerUtil.filterIsInstance(refMethod.getDerivedReferences(), RefFunctionalExpression.class); if (!functionalExpressions.isEmpty()) { HTMLComposer.appendHeading(buf, "Derived lambdas and method references"); myComposer.startList(buf); for (RefFunctionalExpression functionalExpression : functionalExpressions) { myComposer.appendListItem(buf, functionalExpression); } myComposer.doneList(buf); } }