private Map<String, String> getAttributeMap(String attribute) {
            final Splitter splitter = Splitter.on("&");
            return parseAttr(splitter, attribute, "=");
        }
parseAttr from k1=v1&k2=v2 to kv map

@param splitter {@link Splitter}
@param attr String
@param entrySplitterStr String
@return {@link Map}
inlong-sdk/sort-sdk/src/main/java/org/apache/inlong/sdk/sort/fetcher/tube/TubeSingleTopicFetcher.java