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Description
Describe the current behavior
Ground objects exist in PowSyBl as well as in CGMES, but they are currently not exported.
Describe the expected behavior
IIDM Ground objects should be exported to CGMES Ground objects.
The Terminal of the Ground should also be exported to CGMES.
Describe the motivation
Exporting Ground objects would make the export more complete and prevent quality warnings about the node between the Ground and the GroundDisconnector being referenced by only one Terminal.
Extra Information
No response