Function libsystemd_sys::bus::sd_bus_get_property_string

pub unsafe extern "C" fn sd_bus_get_property_string(
    bus: *mut sd_bus, 
    destination: *const c_char, 
    path: *const c_char, 
    interface: *const c_char, 
    member: *const c_char, 
    ret_error: *mut sd_bus_error, 
    ret: *mut *mut c_char
) -> c_int

free the result!