Function write_versioned_msg_async_with_dialect_signed 

pub async fn write_versioned_msg_async_with_dialect_signed<D: Dialect, W: AsyncWrite + Unpin>(
    writer: &mut W,
    version: MavlinkVersion,
    header: MavHeader,
    dialect: &D,
    message: &D::Message,
    signing_data: Option<&SigningData>,
) -> Result<usize, MessageWriteError>

Available on crate features mav2-message-signing and tokio only.

Asynchronously write a dialect message with MAVLink 2 signing when configured.