static WebSocketClientBuilder builder(Scheme scheme, EndpointGroup endpointGroup, String path) {
        requireNonNull(scheme, "scheme");
        requireNonNull(endpointGroup, "endpointGroup");
        return new WebSocketClientBuilder(scheme, endpointGroup, path);
    }
Returns a new {@link WebSocketClientBuilder} created with the specified {@link Scheme},
the {@link EndpointGroup}, and the {@code path}.
core/src/main/java/com/linecorp/armeria/client/websocket/WebSocketClient.java