if (VM.VerifyAssertions) VM.assert(bcIndex <= bcLength);
if (VM.VerifyAssertions) VM._assert(bcIndex <= bcLength);
  public final void skipInstruction() {    if (VM.VerifyAssertions) VM.assert(bcIndex <= bcLength);    int len = JBC_length[opcode] - 1;    if (wide) len += len;    if (len >= 0) bcIndex += len;    else          skipSpecialInstruction(opcode);  }