Add null guards 4

[jack-berg]

Related to #8802.

See #8863 description for methodology.

• io.opentelemetry.api.trace.SpanId
• io.opentelemetry.api.trace.TraceFlags
• io.opentelemetry.api.trace.TraceId
• io.opentelemetry.api.trace.TracerProvider
• io.opentelemetry.api.trace.propagation.W3CTraceContextPropagator
• io.opentelemetry.context.ArrayBasedContext
• io.opentelemetry.context.Context
• io.opentelemetry.context.ContextKey
• io.opentelemetry.context.ContextStorage
• io.opentelemetry.context.StrictContextStorage

[opentelemetry-pr-dashboard]

Pull request dashboard status

Waiting on the author · refreshed 2026-10-19 22:25 UTC

Investigate required status check failures. Note: codecov/patch is also failing but is not a required check.

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[codecov]

Codecov Report

❌ Patch coverage is 63.07692% with 24 lines in your changes missing coverage. Please review.
✅ Project coverage is 90.36%. Comparing base (b32298a) to head (0e66ab6).
⚠️ Report is 6 commits behind head on main.

Files with missing lines	Patch %	Lines
...va/io/opentelemetry/context/ArrayBasedContext.java	25.00%	4 Missing and 2 partials ⚠️
...in/java/io/opentelemetry/api/trace/TraceFlags.java	0.00%	2 Missing and 1 partial ⚠️
...ava/io/opentelemetry/api/trace/TracerProvider.java	0.00%	2 Missing and 1 partial ⚠️
...rc/main/java/io/opentelemetry/context/Context.java	81.25%	2 Missing and 1 partial ⚠️
...main/java/io/opentelemetry/context/ContextKey.java	0.00%	2 Missing and 1 partial ⚠️
.../java/io/opentelemetry/context/ContextStorage.java	0.00%	2 Missing and 1 partial ⚠️
...io/opentelemetry/context/StrictContextStorage.java	0.00%	2 Missing and 1 partial ⚠️

❌ Your patch check has failed because the patch coverage (63.07%) is below the target coverage (80.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #8968      +/-   ##
============================================
- Coverage     90.40%   90.36%   -0.05%     
- Complexity    10898    10910      +12     
============================================
  Files          1015     1015              
  Lines         29843    29909      +66     
  Branches       3896     3911      +15     
============================================
+ Hits          26981    27026      +45     
- Misses         1910     1924      +14     
- Partials        952      959       +7     

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