String (@NotNull CommentTracker ct, @NotNull PsiMethodCallExpression qualifierCall) { PsiReferenceParameterList parameterList = qualifierCall.getMethodExpression().getParameterList(); if (parameterList == null) return null; PsiTypeElement[] elements = parameterList.getTypeParameterElements(); return elements.length == 1 ? ct.text(elements[0]) : null; }