Alonexc opened a new issue, #2729:
URL: https://github.com/apache/incubator-eventmesh/issues/2729

   ### Search before asking
   
   - [X] I had searched in the 
[issues](https://github.com/apache/eventmesh/issues?q=is%3Aissue) and found no 
similar issues.
   
   
   ### Enhancement Request
   
   
![image](https://user-images.githubusercontent.com/91315508/209911048-a5852a26-a7cf-4406-80cf-f5b77fc6650a.png)
   located at:
   
eventmesh-runtime/src/main/java/org/apache/eventmesh/runtime/core/protocol/http/processor/UnSubscribeProcessor.java
 line 166
   analysis and explanation:
   This method checks for the presence of a key in a map using containsKey(), 
before attempting to fetch the value of the key using get(). This equates to 
doing two map lookups in a row.
   
   
   ### Describe the solution you'd like
   
   It is much simpler to just fetch the value with get, and checking for non 
null instead.
   
   ### Are you willing to submit PR?
   
   - [ ] Yes I am willing to submit a PR!


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