#[no_mangle]
pub unsafe extern "C" fn rnp_signature_get_features(
sig: *const RnpSignature,
features: *mut u32
) -> RnpResult
#[no_mangle]
pub unsafe extern "C" fn rnp_signature_get_features(
sig: *const RnpSignature,
features: *mut u32
) -> RnpResult