added orbit/deorbit methods to java Node implementation

java/src/com/zerotier/sdk/Node.java

@@ -89,6 +89,7 @@ public class Node {
      * @param eventListener User written instance of the {@link EventListener} interface to receive status updates and non-fatal error notices.  This instance must be unique per Node object.
      * @param frameListener 
      * @param configListener User written instance of the {@link VirtualNetworkConfigListener} interface to be called when virtual LANs are created, deleted, or their config parameters change.  This instance must be unique per Node object.
+     * @param pathChecker User written instance of the {@link PathChecker} interface. Not required and can be null.
      */
 	public Node(long now,
                 DataStoreGetListener getListener,
@@ -321,6 +322,34 @@ public class Node {
         return multicastUnsubscribe(nodeId, nwid, multicastGroup, multicastAdi);
     }
 
+    /**
+     * Add or update a moon
+     *
+     * Moons are persisted in the data store in moons.d/, so this can persist
+     * across invocations if the contents of moon.d are scanned and orbit is
+     * called for each on startup.
+     *
+     * @param moonWorldId Moon's world ID
+     * @param moonSeed If non-zero, the ZeroTier address of any member of the moon to query for moon definition
+     * @return Error if moon was invalid or failed to be added
+     */
+    public ResultCode orbit(
+            long moonWorldId,
+            long moonSeed) {
+        return orbit(nodeId, moonWorldId, moonSeed);
+    }
+
+    /**
+     * Remove a moon (does nothing if not present)
+     *
+     * @param moonWorldId World ID of moon to remove
+     * @return Error if anything bad happened
+     */
+    public ResultCode deorbit(
+            long moonWorldId) {
+        return deorbit(nodeId, moonWorldId);
+    }
+
     /**
      * Get this node's 40-bit ZeroTier address
      *
@@ -423,6 +452,15 @@ public class Node {
         long multicastGroup,
         long multicastAdi);
 
+    private native ResultCode orbit(
+            long nodeId,
+            long moonWorldId,
+            long moonSeed);
+
+    private native ResultCode deorbit(
+            long nodeId,
+            long moonWorldId);
+
     private native long address(long nodeId);
 
     private native NodeStatus status(long nodeId);