public GrpcSelectorHandle.Builder upstreamUrl(final String upstreamUrl) {
            this.upstreamUrl = upstreamUrl;
            return this;
        }
upstreamUrl.
@param upstreamUrl upstreamUrl
@return Builder
shenyu-e2e/shenyu-e2e-common/src/main/java/org/apache/shenyu/e2e/model/handle/GrpcSelectorHandle.java