11 files declare their use of AdvaggSettersTrait in Advanced CSS/JS Aggregation 8.4

CssW3Form.php in advagg_validator/src/Form/CssW3Form.php

InfoForm.php in src/Form/InfoForm.php

OperationsForm.php in src/Form/OperationsForm.php

SettingsForm.php in src/Form/SettingsForm.php

SettingsForm.php in advagg_ext_minify/src/Form/SettingsForm.php

SettingsForm.php in advagg_old_ie_compatibility/src/Form/SettingsForm.php

SettingsForm.php in advagg_mod/src/Form/SettingsForm.php

SettingsForm.php in advagg_css_minify/src/Form/SettingsForm.php

SettingsForm.php in advagg_js_minify/src/Form/SettingsForm.php

SettingsForm.php in advagg_cdn/src/Form/SettingsForm.php

SettingsForm.php in advagg_bundler/src/Form/SettingsForm.php