private static int GetStringCritical(VM_JNIEnvironment env) {
private static VM_Address GetStringCritical(VM_JNIEnvironment env, int strJREF, VM_Address isCopyAddress) {
  private static int GetStringCritical(VM_JNIEnvironment env) {    if (traceJNI) VM.sysWrite("JNI called: GetStringCritical \n");       VM.sysWrite("JNI ERROR: GetStringCritical not implemented yet, exiting ...\n");    VM.sysExit(VM.exitStatusUnsupportedInternalOp);    return -1;   }