public int http2MaxFrameSize() {
        return get(HTTP2_MAX_FRAME_SIZE);
    }
Returns the <a href="https://datatracker.ietf.org/doc/html/rfc7540#section-6.5.2">SETTINGS_MAX_FRAME_SIZE</a>
that indicates the size of the largest frame payload that this client is willing to receive.
core/src/main/java/com/linecorp/armeria/client/ClientFactoryOptions.java