9 files declare their use of Mapping in GatherContent 8.4

ContentConfirmForm.php in gathercontent_ui/src/Form/ContentConfirmForm.php

ContentImportSelectForm.php in gathercontent_ui/src/Form/ContentImportSelectForm.php

ContentProcessor.php in src/Import/ContentProcess/ContentProcessor.php

ContentSelectForm.php in gathercontent_ui/src/Form/ContentSelectForm.php

gathercontent.drush.inc in ./gathercontent.drush.inc

Drush command to cli config import.

gathercontent.install in ./gathercontent.install

Install and uninstall script for GatherContent module.

MappingImportForm.php in gathercontent_ui/src/Form/MappingImportForm.php

MappingLoader.php in src/MappingLoader.php

MockData.php in tests/modules/gathercontent_test/src/MockData.php