use crate;
/// ### Content-Language
/// Related: Content handling
///
/// The Content-Language entity-header field describes the natural language(s)
/// of the intended audience for the enclosed entity. Note that this may not be
/// equivalent to all the languages used within the entity.
///
/// Reference: https://www.rfc-editor.org/rfc/rfc1945.html#appendix-D.2.5
///