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### _Why are the changes needed?_
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Rename `ExecuteStatement#getQueryLog` to `ExecuteStatement#fetchQueryLog`, to suppress IDEA complaination **Accessor-like named method has Unit result type** and make it more readable.
### _How was this patch tested?_
- [ ] Add some test cases that check the changes thoroughly including negative and positive cases if possible
- [ ] Add screenshots for manual tests if appropriate
- [x] [Run test](https://kyuubi.readthedocs.io/en/latest/tools/testing.html#running-tests) locally before make a pull request
Closes#691 from pan3793/readable.
Closes#691
96c0c26 [Cheng Pan] Rename getQueryLog to fetchQueryLog
Authored-by: Cheng Pan <379377944@qq.com>
Signed-off-by: Kent Yao <yao@apache.org>
15f6438ab9