in core/src/main/java/org/apache/rocketmq/streams/core/window/WindowKey.java [121:129]
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
WindowKey windowKey = (WindowKey) o;
return Objects.equal(operatorName, windowKey.operatorName)
&& Objects.equal(windowStart, windowKey.windowStart)
&& Objects.equal(windowEnd, windowKey.windowEnd)
&& Objects.equal(key2String, windowKey.key2String);
}