Function lapin_async::format::frame::gen_content_header_frame

pub fn gen_content_header_frame<'a>(
    input: (&'a mut [u8], usize), 
    channel_id: u16, 
    class_id: u16, 
    length: u64, 
    properties: &Properties
) -> Result<(&'a mut [u8], usize), GenError>