@Override
  public ParamsValue newOperation(final AbstractInsnNode insn) {
    int size;
    switch (insn.getOpcode()) {
      case LCONST_0, LCONST_1, DCONST_0, DCONST_1 -> size = 2;
      case LDC -> {
        Object cst = ((LdcInsnNode)insn).cst;
        size = cst instanceof Long || cst instanceof Double ? 2 : 1;
      }
      case GETSTATIC -> size = Type.getType(((FieldInsnNode)insn).desc).getSize();
      default -> size = 1;
    }
    return size == 1 ? val1 : val2;
  }
@Override
  public ParamsValue newOperation(final AbstractInsnNode insn)