pub trait SeekWritableMessage { }Expand description
Marker trait that relaxes MinimalWritableMessage’s sequence requirements.
This indicates that the sequence of calling set_code(),
add_option() and
set_payload() is not fixed. The sequence of calls only
has meaning in that later set_code() and set_payload() calls override earlier ones, and
that add_option() on the same option number are stored in their sequence of addition.