private PsiDocComment updateJavaDocAction(T element, PsiDocComment oldDocComment) {
PsiDocComment result = null;
JavaDoc newJavaDoc = generateJavaDoc(element);
JavaDoc oldJavaDoc = JavaDocUtils.createJavaDoc(oldDocComment);
if (newJavaDoc != null) {
newJavaDoc = JavaDocUtils.mergeJavaDocs(oldJavaDoc, newJavaDoc);
String javaDoc = newJavaDoc.toJavaDoc();
result = psiElementFactory.createDocCommentFromText(javaDoc);
}
return result;
}