if(post.getFieldsMap().get(AtomXPath.content)== null)
post.setContent(post.getContent());
if(!post.getFieldsMap().toString().contains(BlogXPath.tags.toString()))
post.setTags(post.getTags());
BlogPostSerializer serializer = new BlogPostSerializer(post);
String payload = serializer.updatePayload();
String updatePostUrl = BlogUrls.UPDATE_REMOVE_POST.format(this, BlogUrlParts.blogHandle.get(blogHandle), BlogUrlParts.entryAnchor.get(post.getUid()));
Response response = updateData(updatePostUrl, null, payload, null);
checkResponseCode(response, HTTPCode.OK);
post = getBlogPostFeedHandler().createEntity(response);