+ * Returns whether this Sone is known.
+ *
+ * @return {@code true} if this Sone is known, {@code false} otherwise
+ */
+ public boolean isKnown() {
+ return known;
+ }
+
+ /**
+ * Sets whether this Sone is known.
+ *
+ * @param known
+ * {@code true} if this Sone is known, {@code false} otherwise
+ * @return This Sone
+ */
+ public Sone setKnown(boolean known) {
+ this.known = known;
+ return this;
+ }
+
+ /**