Invoke field.module's version of a field hook.
This function invokes the field_default_[op]() function. Use _field_invoke() to invoke the field type implementation, hook_field_[op]().
function _field_invoke_default($op, $entity_type, EntityInterface $entity, &$a = NULL, &$b = NULL, $options = array()) {
$options['default'] = TRUE;
return _field_invoke($op, $entity_type, $entity, $a, $b, $options);
}