Macro wrapped_payload 

macro_rules! wrapped_payload {
    ($(#[$comment:meta])* $vis:vis struct $name:ident, $inner:ident$(<$inner_ty:ty>)?,) => { ... };
}

Create a newtype wrapper around a given type.

This is used to create newtypes for the various TLS message types which is used to wrap the PayloadU8 or PayloadU16 types. This is typically used for types where we don’t need anything other than access to the underlying bytes.