public static long defaultHttp2MaxHeaderListSize() {
        return DEFAULT_HTTP2_MAX_HEADER_LIST_SIZE;
    }
Returns the default value of the {@link ServerBuilder#http2MaxHeaderListSize(long)} and
{@link ClientFactoryBuilder#http2MaxHeaderListSize(long)} option.
Note that this flag has no effect if a user specified the value explicitly via
{@link ServerBuilder#http2MaxHeaderListSize(long)} or
{@link ClientFactoryBuilder#http2MaxHeaderListSize(long)}.

<p>The default value of this flag is {@value DefaultFlagsProvider#DEFAULT_HTTP2_MAX_HEADER_LIST_SIZE}.
Specify the {@code -Dcom.linecorp.armeria.defaultHttp2MaxHeaderListSize=<integer>} JVM option
to override the default value.
core/src/main/java/com/linecorp/armeria/common/Flags.java