6 files declare their use of EventEnrollment in Open Social 10.2.x

EnrollActionForm.php in modules/social_features/social_event/src/Form/EnrollActionForm.php

EnrollRequestModalForm.php in modules/social_features/social_event/src/Form/EnrollRequestModalForm.php

EventAnEnrollForm.php in modules/social_features/social_event/modules/social_event_an_enroll/src/Form/EventAnEnrollForm.php

SocialEventInviteBulkHelper.php in modules/social_features/social_event/modules/social_event_invite/src/SocialEventInviteBulkHelper.php

SocialEventManagersAddEnrolleeForm.php in modules/social_features/social_event/modules/social_event_managers/src/Form/SocialEventManagersAddEnrolleeForm.php

social_event_managers.module in modules/social_features/social_event/modules/social_event_managers/social_event_managers.module

Contains social_event_managers.module.