Adjust nomenclature. Add more C API extension functions

src/Events.hpp

@@ -22,8 +22,6 @@
 
 #include "ZeroTierSockets.h"
 
-#include <string>
-
 #ifdef __WINDOWS__
 #include <BaseTsd.h>
 #endif
@@ -130,6 +128,10 @@ class Events {
      */
     void destroy(zts_event_msg_t* msg);
 
+#ifdef ZTS_ENABLE_JAVA
+    void setJavaCallback(jobject objRef, jmethodID methodId);
+#endif
+
     /**
      * Return whether a callback method has been set
      */