Document any special tokens this field might use for itself.
Overrides FieldPluginBase::document_self_tokens
add_self_tokens()
function document_self_tokens(&$tokens) {
$field = $this->field_info;
foreach ($field['columns'] as $id => $column) {
$tokens['[' . $this->options['id'] . '-' . $id . ']'] = t('Raw @column', array(
'@column' => $id,
));
}
}