public Builder upstreamHost(final String upstreamHost) {
            this.upstreamHost = upstreamHost;
            return this;
        }
build upstreamHost.

@param upstreamHost upstreamHost
@return upstreamHost
shenyu-e2e/shenyu-e2e-common/src/main/java/org/apache/shenyu/e2e/model/handle/DubboHandler.java