Implements hook_field_storage_info().
function field_test_field_storage_info() {
return array(
'field_test_storage' => array(
'label' => t('Test storage'),
'description' => t('Dummy test storage backend. Stores field values in the variable table.'),
),
'field_test_storage_failure' => array(
'label' => t('Test storage failure'),
'description' => t('Dummy test storage backend. Always fails to create fields.'),
),
);
}