preprocess.inc in Display Suite 6.3
File
plugins/ds_field/preprocess.incView source
<?php
/**
* @file
* The Display Suite field type theme plugin
*/
$plugin = array(
'type' => DS_FIELD_TYPE_PREPROCESS,
'name' => t('Preprocess field'),
'description' => t('Renders content available through preprocess sources'),
'class' => 'dsFieldPreprocess',
);