11 files declare their use of YamlFormDialogHelper in YAML Form 8

yamlform.theme.inc in includes/yamlform.theme.inc

Preprocessors and helper functions to make theming easier.

YamlFormEntityHandlersForm.php in src/YamlFormEntityHandlersForm.php

YamlFormEntityListBuilder.php in src/YamlFormEntityListBuilder.php

YamlFormPluginHandlerController.php in src/Controller/YamlFormPluginHandlerController.php

YamlFormSubmissionListBuilder.php in src/YamlFormSubmissionListBuilder.php

YamlFormTemplatesController.php in modules/yamlform_templates/src/Controller/YamlFormTemplatesController.php

YamlFormTemplatesSubmissionPreviewForm.php in modules/yamlform_templates/src/YamlFormTemplatesSubmissionPreviewForm.php

YamlFormUiElementFormBase.php in modules/yamlform_ui/src/Form/YamlFormUiElementFormBase.php

YamlFormUiElementTypeChangeForm.php in modules/yamlform_ui/src/Form/YamlFormUiElementTypeChangeForm.php

YamlFormUiElementTypeSelectForm.php in modules/yamlform_ui/src/Form/YamlFormUiElementTypeSelectForm.php

YamlFormUiEntityForm.php in modules/yamlform_ui/src/YamlFormUiEntityForm.php