6 methods override SqlBase::count() in Drupal 8

EntityTranslationSettings::count in core/modules/content_translation/src/Plugin/migrate/source/d7/EntityTranslationSettings.php

Gets the source count.

FieldInstance::count in core/modules/field/src/Plugin/migrate/source/d7/FieldInstance.php

Gets the source count.

Variable::count in core/modules/migrate_drupal/src/Plugin/migrate/source/Variable.php

Gets the source count.

VariableTranslation::count in core/modules/migrate_drupal/src/Plugin/migrate/source/d6/VariableTranslation.php

Gets the source count.

VariableTranslation::count in core/modules/migrate_drupal/src/Plugin/migrate/source/d7/VariableTranslation.php

Gets the source count.

ViewModeBase::count in core/modules/node/src/Plugin/migrate/source/d6/ViewModeBase.php

Gets the source count.