VM.assert(opcode == JBC_goto_w || opcode == JBC_jsr_w);
VM._assert(opcode == JBC_goto_w || opcode == JBC_jsr_w);
  public final int getWideBranchOffset() {    if (VM.VerifyAssertions)      VM.assert(opcode == JBC_goto_w || opcode == JBC_jsr_w);    return readSignedInt();  }