refactor: use methods to get client entries

[LingyuCoder]

• This is a bugfix
• This is a feature
• This is a code refactor
• This is a test update
• This is a docs update
• This is a metadata update

For Bugs and Features; did you add new tests?

A test case was added in test/e2e/client.test.js to test that the override can take effect correctly.

Motivation / Use-Case

Use methods to get client entries, so that users can introduce custom client entries instead by overriding these methods.

Breaking Changes

No breaking changes

Additional Info

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: LingyuCoder / name: harpsealjs (1642bb5, 58639e6, 728f194)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.12%. Comparing base (af6bd68) to head (1642bb5).
Report is 91 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5308      +/-   ##
==========================================
- Coverage   90.29%   85.12%   -5.18%     
==========================================
  Files          15       16       +1     
  Lines        1577     1741     +164     
  Branches      601      652      +51     
==========================================
+ Hits         1424     1482      +58     
- Misses        140      233      +93     
- Partials       13       26      +13     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[alexander-akait]

Thank you