LaunchXL-F28127 with DRV8301 Serial Communication source code

i am using SCI communication ( GPIO28, GPIO29 pins as RX and TX). i did not find the  below mentioned functions in any Lab Programs.

i have a doubt. is this functions are in-built or the user have to write in the code? how can i receive and send the data? i did not find any function that sends and receives data.

 mySci = SCI_init((void *)SCIA_BASE_ADDR, sizeof(SCI_Obj));

void scia_init()

{

    CLK_enableSciaClock(myClk);

    SCI_disableParity(mySci);

    SCI_setNumStopBits(mySci, SCI_NumStopBits_One);

    SCI_setCharLength(mySci, SCI_CharLength_8_Bits);

    SCI_enableTx(mySci);

    SCI_enableRx(mySci);

    SCI_enableTxInt(mySci);

    SCI_enableRxInt(mySci);

    SCI_setBaudRate(mySci, SCI_BaudRate_115_2_kBaud);    // value is 15

    SCI_enableFifoEnh(mySci);

    SCI_resetTxFifo(mySci);

    SCI_clearTxFifoInt(mySci);

    SCI_resetChannels(mySci);

    SCI_setTxFifoIntLevel(mySci, SCI_FifoLevel_Empty);

    SCI_resetRxFifo(mySci);

    SCI_clearRxFifoInt(mySci);

    SCI_setRxFifoIntLevel(mySci, SCI_FifoLevel_4_Words);

    SCI_setPriority(mySci, SCI_Priority_FreeRun);

    SCI_enable(mySci);

    return;

}