pub type OSSL_FUNC_provider_name_fn = Option<unsafe extern "C" fn(_: *const ossl_core_handle_st) -> *const i8>;
enum OSSL_FUNC_provider_name_fn { None, Some(unsafe extern "C" fn(_: *const ossl_core_handle_st) -> *const i8), }
No value.
Some value of type T.
T