public static boolean allowDoubleDotsInQueryString() {
        return ALLOW_DOUBLE_DOTS_IN_QUERY_STRING;
    }
Returns whether to allow double dots ({@code ..}) in a request path query string.

<p>Note that double dots in a query string can lead to a vulnerability if a query param value contains
an improper path such as {@code /download?path=../../secrets.txt}. Therefore, extra caution should be
taken when enabling this option, and you may need additional validations at the application level.

<p>This flag is disabled by default. Specify the
{@code -Dcom.linecorp.armeria.allowDoubleDotsInQueryString=true} JVM option to enable it.
core/src/main/java/com/linecorp/armeria/common/Flags.java