code: public final Post withContent(final String content) {
        return new Post(id, slug, title, excerpt, content, authorId, author,
                publishTimestamp, modifiedTimestamp, status, parentId,
                guid, commentCount, metadata, type, mimeType, taxonomyTerms, children);
     }
docs: Replaces post content.
  @param content The new content.
  @return The post with content replaced.