Creates a new Headers collection. The Header.ToRaw machinery allows the creation of Headers with variadic and heteregenous arguments, provided they are either:
Creates a new Headers collection. The Header.ToRaw machinery allows the creation of Headers with variadic and heteregenous arguments, provided they are either:
A
which has a Header[A]
in scopeString
Header.Raw
Foldable
(List
, Option
, etc) of the above.