Refactor content reader annotation

[SachinAkash01]

Purpose

$subject

Examples

Checklist

• Linked to an issue
• Updated the changelog
• Added tests
• Updated the spec
• Checked native-image compatibility

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[codecov]

Codecov Report

❌ Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 62.18%. Comparing base (1ef435b) to head (ff43019).
⚠️ Report is 3 commits behind head on master.

Files with missing lines	Patch %	Lines
...llerina/stdlib/ftp/server/ContentMethodRouter.java	0.00%	1 Missing ⚠️
...a/stdlib/ftp/server/FtpContentCallbackHandler.java	0.00%	1 Missing ⚠️

❌ Your project status has failed because the head coverage (62.18%) is below the target coverage (80.00%). You can increase the head coverage or adjust the target coverage.

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #1503      +/-   ##
============================================
- Coverage     66.68%   62.18%   -4.50%     
- Complexity      292      392     +100     
============================================
  Files            34       45      +11     
  Lines          1912     2523     +611     
  Branches        260      415     +155     
============================================
+ Hits           1275     1569     +294     
- Misses          547      810     +263     
- Partials         90      144      +54     

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