Fix CA2208 warnings across the project

[berezovskyi]

Fixes CA2208 warnings across the OSLC4Net_SDK project related to improper instantiation of ArgumentExceptions.

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PR created automatically by Jules for task 9180717376505650744 started by @berezovskyi

Summary by CodeRabbit

• Bug Fixes
  • Error messages for invalid enum value conversions now include context about the problematic input parameter.
  • Unsupported RDF content types now throw more appropriate exceptions with the full content-type string included in error messages.

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No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Run ID: 5a36207b-1e9c-4630-bcff-4ac1bc82e892

📥 Commits

Reviewing files that changed from the base of the PR and between 799fe30 and f4834fc.

📒 Files selected for processing (4)

• OSLC4Net_SDK/OSLC4Net.Core/Model/OccursExtension.cs
• OSLC4Net_SDK/OSLC4Net.Core/Model/RepresentationExtension.cs
• OSLC4Net_SDK/OSLC4Net.Server.Providers/OslcRdfInputFormatter.cs
• OSLC4Net_SDK/OSLC4Net.Server.Providers/OslcRdfOutputFormatter.cs

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Walkthrough

This PR improves exception handling consistency across enum extensions and RDF formatters by replacing generic exceptions with semantically appropriate exception types and adding detailed error messages that include the invalid input value.

Changes

Exception Semantics Improvement

Layer / File(s)	Summary
Enum Extension Error Handling OSLC4Net_SDK/OSLC4Net.Core/Model/OccursExtension.cs, RepresentationExtension.cs	FromString methods now throw ArgumentException with the invalid input value and nameof(value) parameter name instead of parameterless exceptions.
RDF Formatter Error Handling OSLC4Net_SDK/OSLC4Net.Server.Providers/OslcRdfInputFormatter.cs, OslcRdfOutputFormatter.cs	Content-type validation now throws NotSupportedException with the resolved media type string instead of ArgumentOutOfRangeException, providing clearer semantic meaning.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Suggested labels

ci:full

Poem

🐰 Four exceptions now speak with care,
With messages that show what's there—
Enum values dance with args so clear,
RDF types shout "unsupported here!"
Exception semantics, bright and fair! ✨

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately summarizes the main change: fixing CA2208 code analysis warnings across the project through improved argument exception handling.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix-ca2208-warnings-9180717376505650744

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 52.20%. Comparing base (799fe30) to head (f4834fc).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #736   +/-   ##
=======================================
  Coverage   52.20%   52.20%           
=======================================
  Files         174      174           
  Lines       10254    10254           
  Branches     1021     1021           
=======================================
  Hits         5353     5353           
  Misses       4644     4644           
  Partials      257      257           

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