Meadow UART hardware flow control

Hi! What is the situation with hardware flow control on Meadow’s UART?

The datasheet suggests there is
UART4_RTS on PA15,
UART4_CTS on PB0,
USART1_CTS on PA11 and
USART1_RTS on PA12.

Are any of these available on the Meadow board? (I can’t find any schematic reference)

There is also Meadow.Hardware.FlowControlType enum but I can’t see it used by anything.

Thanks,
Jan