GEOPY-2319: OMF export fails on container group

[domfournier]

GEOPY-2319 - OMF export fails on container group

[codecov]

Codecov Report

Attention: Patch coverage is 86.48649% with 5 lines in your changes missing coverage. Please review.

Project coverage is 93.09%. Comparing base (1c97986) to head (ae5b100).
Report is 5 commits behind head on develop.

Files with missing lines	Patch %	Lines
omf/fileio/geoh5.py	80.00%	5 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop      #99      +/-   ##
===========================================
- Coverage    93.28%   93.09%   -0.19%     
===========================================
  Files           28       28              
  Lines         1489     1521      +32     
===========================================
+ Hits          1389     1416      +27     
- Misses         100      105       +5     

Files with missing lines	Coverage Δ
tests/convert_project_test.py	100.00% <100.00%> (ø)
omf/fileio/geoh5.py	92.64% <80.00%> (-0.70%)	⬇️

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