public ServerCacheControlBuilder proxyRevalidate(boolean proxyRevalidate) {
        this.proxyRevalidate = proxyRevalidate;
        return this;
    }
Enables or disables the {@code "proxy-revalidate"} directive.

@param proxyRevalidate {@code true} to enable or {@code false} to disable.
core/src/main/java/com/linecorp/armeria/common/ServerCacheControlBuilder.java