All classes that implement DumperInterface in Geocoder 8.3

class \Drupal\geocoder\DumperBase implements ContainerFactoryPluginInterface, DumperInterface
class \Drupal\geocoder\Plugin\Geocoder\Dumper\AddressText
class \Drupal\geocoder\Plugin\Geocoder\Dumper\GeoJson
class \Drupal\geocoder\Plugin\Geocoder\Dumper\Gpx
class \Drupal\geocoder\Plugin\Geocoder\Dumper\Kml
class \Drupal\geocoder\Plugin\Geocoder\Dumper\Wkb
class \Drupal\geocoder\Plugin\Geocoder\Dumper\Wkt
class \Drupal\geocoder_geofield\Plugin\Geocoder\Dumper\Geohash
class \Drupal\geocoder_geofield\Plugin\Geocoder\Dumper\Geometry

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