public boolean isHttpOnly() {
        return httpOnly;
    }
A RFC 6265 compliant cookie.

Note: RFC 2109 and RFC 2965 is no longer supported. All fields that are not part of RFC 6265 are deprecated.

@author Einar M R Rosenvinge
@author bjorncs
container-core/src/main/java/com/yahoo/jdisc/http/Cookie.java