11 files declare their use of LanguageSelectionPageConditionBase in Language Selection Page 8.2

LanguageSelectionPageConditionBlacklistedPaths.php in src/Plugin/LanguageSelectionPageCondition/LanguageSelectionPageConditionBlacklistedPaths.php

LanguageSelectionPageConditionIgnoreNeutral.php in src/Plugin/LanguageSelectionPageCondition/LanguageSelectionPageConditionIgnoreNeutral.php

LanguageSelectionPageConditionIndexPhp.php in src/Plugin/LanguageSelectionPageCondition/LanguageSelectionPageConditionIndexPhp.php

LanguageSelectionPageConditionLanguagePrefixes.php in src/Plugin/LanguageSelectionPageCondition/LanguageSelectionPageConditionLanguagePrefixes.php

LanguageSelectionPageConditionMethodIsValid.php in src/Plugin/LanguageSelectionPageCondition/LanguageSelectionPageConditionMethodIsValid.php

LanguageSelectionPageConditionPath.php in src/Plugin/LanguageSelectionPageCondition/LanguageSelectionPageConditionPath.php

LanguageSelectionPageConditionPathIsValid.php in src/Plugin/LanguageSelectionPageCondition/LanguageSelectionPageConditionPathIsValid.php

LanguageSelectionPageConditionPHPSapi.php in src/Plugin/LanguageSelectionPageCondition/LanguageSelectionPageConditionPHPSapi.php

LanguageSelectionPageConditionTitle.php in src/Plugin/LanguageSelectionPageCondition/LanguageSelectionPageConditionTitle.php

LanguageSelectionPageConditionType.php in src/Plugin/LanguageSelectionPageCondition/LanguageSelectionPageConditionType.php

LanguageSelectionPageConditionXMLHTTPRequest.php in src/Plugin/LanguageSelectionPageCondition/LanguageSelectionPageConditionXMLHTTPRequest.php