private static int DefineClass(VM_JNIEnvironment env) {
private static int DefineClass(VM_JNIEnvironment env, Address classNameAddress, int classLoader, Address data, int dataLen) {
  private static int DefineClass(VM_JNIEnvironment env) {    if (traceJNI) VM.sysWrite("JNI called: DefineClass  \n");    VM.sysWrite("JNI ERROR: DefineClass not implemented yet.");    VM.sysExit(VM.exitStatusUnsupportedInternalOp);    return -1;  }