A constructor for accessing and modifying existing message headers.
Note that the message headers may not have been created from a STOMP frame
but may have rather originated from using the more generic
{@link hunt.stomp.simp.SimpMessageHeaderAccessor}.
A constructor for accessing and modifying existing message headers. Note that the message headers may not have been created from a STOMP frame but may have rather originated from using the more generic {@link hunt.stomp.simp.SimpMessageHeaderAccessor}.