String (@NotNull PsiLambdaExpression e) { boolean isDumb = DumbService.isDumb(e.getProject()); StringBuilder sb = new StringBuilder("lambda"); PsiType functionalInterfaceType = isDumb ? null : e.getFunctionalInterfaceType(); if (functionalInterfaceType != null) { sb.append(" ").append(htmlEmphasize(getTypeText(functionalInterfaceType, false))); } appendParameters(e, sb, true, isDumb); return sb.toString(); }