I was searching the way to make example code ble_app_uart passkey pairing, while reading the documentation i found that function sd_ble_gap_authenticate() can be used to configure passkey pairing, ble_gap_sec_params_t structure is the argument of the fucntion sd_ble_gap_authenticate(), as per documentation there is a data member keypress in structure ble_gap_sec_params_t, but in my project keypress is missing in structure ble_gap_sec_params_t, kindly help me to fix this.