Overrides FieldPluginBase::defineValueProcessPipeline
public function defineValueProcessPipeline(MigrationInterface $migration, $field_name, $data) { $process = [ 'plugin' => 'sub_process', 'source' => $field_name, 'process' => [ 'value' => 'email', ], ]; $migration->setProcessOfProperty($field_name, $process); }