/**
 * Implements hook_entity_field_access().
 */
function {{ machine_name }}_entity_field_access($operation, \Drupal\Core\Field\FieldDefinitionInterface $field_definition, \Drupal\Core\Session\AccountInterface $account, \Drupal\Core\Field\FieldItemListInterface $items = NULL) {
  if ($field_definition->getName() == 'field_of_interest' && $operation == 'edit') {
    return AccessResult::allowedIfHasPermission($account, 'update field of interest');
  }
  return AccessResult::neutral();
}