+ * Returns the IDs of all liked replies.
+ *
+ * @return All liked replies’ IDs
+ */
+ public Set<String> getLikedReplyIds() {
+ return Collections.unmodifiableSet(likedReplyIds);
+ }
+
+ /**
+ * Sets the IDs of all liked replies.
+ *
+ * @param likedReplyIds
+ * All liked replies’ IDs
+ * @return This Sone (for method chaining)
+ */
+ public synchronized Sone setLikeReplyIds(Set<String> likedReplyIds) {
+ this.likedReplyIds.clear();
+ this.likedReplyIds.addAll(likedReplyIds);
+ modificationCounter++;
+ return this;
+ }
+
+ /**
+ * Checks whether the given reply ID is liked by this Sone.
+ *
+ * @param replyId
+ * The ID of the reply
+ * @return {@code true} if this Sone likes the given reply, {@code false}
+ * otherwise
+ */
+ public boolean isLikedReplyId(String replyId) {
+ return likedReplyIds.contains(replyId);
+ }
+
+ /**
+ * Adds the given reply ID to the list of replies this Sone likes.
+ *
+ * @param replyId
+ * The ID of the reply
+ * @return This Sone (for method chaining)
+ */
+ public synchronized Sone addLikedReplyId(String replyId) {
+ if (likedReplyIds.add(replyId)) {
+ modificationCounter++;
+ }
+ return this;
+ }
+
+ /**
+ * Removes the given post ID from the list of replies this Sone likes.
+ *
+ * @param replyId
+ * The ID of the reply
+ * @return This Sone (for method chaining)
+ */
+ public synchronized Sone removeLikedReplyId(String replyId) {
+ if (likedReplyIds.remove(replyId)) {
+ modificationCounter++;
+ }
+ return this;
+ }
+
+ /**