protected Method getMethod(String serviceName, String methodName) {
        return ReflectCache.getMethodCache(serviceName, methodName);
    }
Handle request from HTTP/2

@param streamId stream Id
@param request SofaRequest
@param ctx ChannelHandlerContext
@param encoder Http2ConnectionEncoder
remoting/remoting-http/src/main/java/com/alipay/sofa/rpc/server/http/HttpServerHandler.java