#[no_mangle]
pub unsafe extern "C" fn dc_provider_new_from_email_with_dns(
context: *const dc_context_t,
addr: *const c_char,
) -> *const dc_provider_t
#[no_mangle]
pub unsafe extern "C" fn dc_provider_new_from_email_with_dns(
context: *const dc_context_t,
addr: *const c_char,
) -> *const dc_provider_t