Function paho_mqtt_sys::MQTTProperties_getPropertyAt

pub unsafe extern "C" fn MQTTProperties_getPropertyAt(
    props: *mut MQTTProperties, 
    propid: MQTTPropertyCodes, 
    index: c_int
) -> *mut MQTTProperty

Returns a pointer to the property structure for a specific property when it's not the only instance. @param props pointer to the property list. @param propid the property id to check for. @param index the instance number, starting at 0. @return the pointer to the property structure if found. NULL if not found.