Collapsed field widget

hi, I would love if the field had settings for the fieldset in fields.
Collapsible and collapsed is currently hardcoded.

getlocations_fields.module line:1013

$widget += array(
    '#type' => 'fieldset',
    '#title' => t('Location'),
    '#collapsible' => TRUE,
    '#collapsed' => TRUE,
    '#delta' => $delta,
    '#element_validate' => array('getlocations_fields_widget_validate'),
  );