...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
The type of container used for the body.
Defined in header <boost/beast/http/empty_body.hpp>
struct value_type
This determines the type of message::body
when this body type is used
with a message container.