Improved coverage by adding test checking that NotImplementedErrors are properly raised when encountering invalid (or not yet implemented) MAP_PROJ attrributes.
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[x] Unit tests for the changes exist
[x] Tests pass on CI
[x] Documentation reflects the changes where applicable
Change Summary
Improved coverage by adding test checking that NotImplementedErrors are properly raised when encountering invalid (or not yet implemented) MAP_PROJ attrributes.
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Checklist