if (VM.VerifyAssertions) VM.assert(index <= bcLength);
if (VM.VerifyAssertions) VM._assert(index <= bcLength);
  private final int getUnsignedShort(int index) {    if (VM.VerifyAssertions) VM.assert(index <= bcLength);    int i = (bcodes[index++] & 0xFF) << 8;    i |= (bcodes[index] & 0xFF);    return (int)i;  }  