whre is simulated RXD-input character stream in QuartusPrime

hello there.

actually, I didn't know simulation for UART has convenient system such as "simulated RXD-input character stream".

I wanted to try it in QuartusPrime (15.1).

but it is gone.

I checked it in QuartusII 12.1, it exists on Qsys.

so now, how should I simulatio UART system in QuartusPrime?

thanks in advance.