pub fn disable_vary_header(mut self) -> Cors {
        if let Some(cors) = cors(&mut self.cors, &self.error) {
            cors.vary_header = false
        }
        self
    }
/// Disable `Vary` header support.
///
/// When enabled the header `Vary: Origin` will be returned as per the W3
/// implementation guidelines.
///
/// Setting this header when the `Access-Control-Allow-Origin` is
/// dynamically generated (e.g. when there is more than one allowed
/// origin, and an Origin than '*' is returned) informs CDNs and other
/// caches that the CORS headers are dynamic, and cannot be cached.
///
/// By default `vary` header support is enabled.
Disable `Vary` header support.
When enabled the header `Vary: Origin` will be returned as per the W3
implementation guidelines.

Setting this header when the `Access-Control-Allow-Origin` is
dynamically generated  informs CDNs and other
caches that the CORS headers are dynamic, and cannot be cached.

By default `vary` header support is enabled.
Disable ` Vary ` header support . When enabled the header ` Vary : Origin ` will be returned as per the W3 implementation guidelines . Setting this header when the ` Access - Control - Allow - Origin ` is dynamically generated informs CDNs and other caches that the CORS headers are dynamic and cannot be cached . By default ` vary ` header support is enabled .
pub fn disable_vary_header(mut self) -> Cors {
        if let Some(cors) = cors(&mut self.cors, &self.error) {
            cors.vary_header = false
        }
        self
    }
pub fn disable_vary_header ( mut self ) -> Cors { if let Some ( cors ) = cors ( & mut self . cors , & self . error ) { cors . vary_header = false } self }
Disable `Vary` header support.
Disable ` Vary ` header support .
mut self
mut self