9 files declare their use of NumericArgument in Drupal 8

Fid.php in core/modules/file/src/Plugin/views/argument/Fid.php

Fid.php in core/modules/aggregator/src/Plugin/views/argument/Fid.php

Iid.php in core/modules/aggregator/src/Plugin/views/argument/Iid.php

Nid.php in core/modules/node/src/Plugin/views/argument/Nid.php

NumberListField.php in core/modules/options/src/Plugin/views/argument/NumberListField.php

Taxonomy.php in core/modules/taxonomy/src/Plugin/views/argument/Taxonomy.php

Uid.php in core/modules/user/src/Plugin/views/argument/Uid.php

Vid.php in core/modules/node/src/Plugin/views/argument/Vid.php

VocabularyVid.php in core/modules/taxonomy/src/Plugin/views/argument/VocabularyVid.php