[type:optimization] some syntactic sugar optimization

[847850277]

Make sure that:

• You have read the contribution guidelines.
• You submit test cases (unit or integration tests) that back your changes.
• Your local test passed ./mvnw clean install -Dmaven.javadoc.skip=true.

[codecov-commenter]

Codecov Report

Merging #4700 (6110194) into master (3207bb1) will decrease coverage by 0.01%.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##             master    #4700      +/-   ##
============================================
- Coverage     66.26%   66.26%   -0.01%     
- Complexity     8011     8014       +3     
============================================
  Files          1111     1111              
  Lines         32183    32181       -2     
  Branches       2907     2907              
============================================
- Hits          21327    21325       -2     
  Misses         9158     9158              
  Partials       1698     1698              

Impacted Files	Coverage Δ
...erver/etcd/EtcdClientServerRegisterRepository.java	100.00% <100.00%> (ø)
...shenyu/register/client/http/utils/OkHttpTools.java	100.00% <100.00%> (ø)
...a/org/apache/shenyu/sync/data/etcd/EtcdClient.java	92.10% <100.00%> (ø)

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