Function glib_sys::g_convert_with_iconv

pub unsafe extern "C" fn g_convert_with_iconv(
    str: *const c_char, 
    len: ssize_t, 
    converter: GIConv, 
    bytes_read: *mut size_t, 
    bytes_written: *mut size_t, 
    error: *mut *mut GError
) -> *mut c_char