+ void addPost(Post post);
+
+ /**
+ * Removes the given post from this Sone.
+ *
+ * @param post
+ * The post to remove
+ */
+ void removePost(Post post);
+
+ /**
+ * Returns all replies this Sone made.
+ *
+ * @return All replies this Sone made
+ */
+ Set<PostReply> getReplies();
+
+ /**
+ * Sets all replies of this Sone at once.
+ *
+ * @param replies
+ * The new (and only) replies of this Sone
+ * @return This Sone (for method chaining)
+ */
+ Sone setReplies(Collection<PostReply> replies);
+
+ /**
+ * Adds a reply to this Sone. If the given reply was not made by this Sone,
+ * nothing is added to this Sone.
+ *
+ * @param reply
+ * The reply to add
+ */
+ void addReply(PostReply reply);
+
+ /**
+ * Removes a reply from this Sone.
+ *
+ * @param reply
+ * The reply to remove
+ */
+ void removeReply(PostReply reply);
+
+ /**
+ * Returns the IDs of all liked posts.
+ *
+ * @return All liked posts’ IDs
+ */
+ Set<String> getLikedPostIds();
+
+ /**
+ * Sets the IDs of all liked posts.
+ *
+ * @param likedPostIds
+ * All liked posts’ IDs
+ * @return This Sone (for method chaining)
+ */
+ Sone setLikePostIds(Set<String> likedPostIds);
+
+ /**
+ * Checks whether the given post ID is liked by this Sone.
+ *
+ * @param postId
+ * The ID of the post
+ * @return {@code true} if this Sone likes the given post, {@code false}
+ * otherwise
+ */
+ boolean isLikedPostId(String postId);
+
+ /**
+ * Adds the given post ID to the list of posts this Sone likes.
+ *
+ * @param postId
+ * The ID of the post
+ * @return This Sone (for method chaining)
+ */
+ Sone addLikedPostId(String postId);
+
+ /**
+ * Removes the given post ID from the list of posts this Sone likes.
+ *
+ * @param postId
+ * The ID of the post
+ * @return This Sone (for method chaining)
+ */
+ Sone removeLikedPostId(String postId);
+
+ /**
+ * Returns the IDs of all liked replies.
+ *
+ * @return All liked replies’ IDs
+ */
+ Set<String> getLikedReplyIds();
+
+ /**
+ * Sets the IDs of all liked replies.
+ *
+ * @param likedReplyIds
+ * All liked replies’ IDs
+ * @return This Sone (for method chaining)
+ */
+ Sone setLikeReplyIds(Set<String> likedReplyIds);
+
+ /**
+ * 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
+ */
+ boolean isLikedReplyId(String 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)
+ */
+ Sone addLikedReplyId(String replyId);
+
+ /**
+ * 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)
+ */
+ Sone removeLikedReplyId(String replyId);
+
+ /**
+ * Returns the root album that contains all visible albums of this Sone.
+ *
+ * @return The root album of this Sone
+ */
+ Album getRootAlbum();
+
+ /**
+ * Returns Sone-specific options.
+ *
+ * @return The options of this Sone
+ */
+ Options getOptions();
+
+ /**
+ * Sets the options of this Sone.
+ *
+ * @param options
+ * The options of this Sone
+ */
+ /* TODO - remove this method again, maybe add an option provider */
+ void setOptions(Options options);