void (@NotNull PsiLambdaExpression lambdaExpression) { super.visitLambdaExpression(lambdaExpression); PsiParameterList parameterList = lambdaExpression.getParameterList(); final PsiParameter[] parameters = parameterList.getParameters(); if (parameters.length == 0) return; for (PsiParameter parameter : parameters) { if (parameter.getTypeElement() != null) { return; } } final PsiType functionalInterfaceType = lambdaExpression.getFunctionalInterfaceType(); if (functionalInterfaceType != null && LambdaUtil.getFunctionalInterfaceMethod(functionalInterfaceType) != null) { final String inferredTypesText = LambdaUtil.createLambdaParameterListWithFormalTypes(functionalInterfaceType, lambdaExpression, true); if (inferredTypesText != null) { PsiElement nextElement = PsiTreeUtil.skipWhitespacesAndCommentsForward(parameterList); if (PsiUtil.isJavaToken(nextElement, JavaTokenType.ARROW)) { registerErrorAtRange(parameterList, nextElement, inferredTypesText); } else { registerError(parameterList, inferredTypesText); } } } }