What problem does this code solve?
Fixes problems where Strict mode was not enforcing case for non-string values, and allowing non-string keys.

Does the code still compile with Java6?
Yes

Risks
Low

Changes to the API?
No

Will this require a new release?
No

Should the documentation be updated?
No

Does it break the unit tests?
No, new unit tests were added

Was any code refactored in this commit?
No. Sonarqube found some minor issues. Submitter can fix them if time permits, otherwise I will fix them later.

Review status
APPROVED

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