feat:optimize examples.

[SkyeBeFreeman]

PR Type

Refactoring (no functional changes, no api changes).

Describe what this PR does for and how you did.

Adding the issue link (#xxx) if possible.

Note

Checklist

• Add information of this PR to CHANGELOG.md in root of project.
• Add documentation in javadoc or comment below the PR if necessary.

Checklist (Optional)

• Will pull request to branch of 2020.0.
• Will pull request to branch of 2022.0.
• Will pull request to branch of hoxton.

[codecov]

Codecov Report

Merging #1187 (0340561) into 2020.0 (09aa10d) will decrease coverage by 0.02%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             2020.0    #1187      +/-   ##
============================================
- Coverage     75.84%   75.82%   -0.02%     
+ Complexity     1576     1575       -1     
============================================
  Files           255      255              
  Lines          5767     5767              
  Branches        697      697              
============================================
- Hits           4374     4373       -1     
  Misses         1018     1018              
- Partials        375      376       +1     

see 1 file with indirect coverage changes