int index = readUnsignedShort();
  public final VM_Type getTypeReference() {    if (VM.VerifyAssertions)      VM._assert(opcode == JBC_new || opcode == JBC_anewarray ||                opcode == JBC_checkcast || opcode == JBC_instanceof ||                opcode == JBC_multianewarray);    int index = readUnsignedShort();    return declaringClass.getTypeRef(index);  }