restore method
Restores a soft-deleted object.
Request parameters:
bucket - Name of the bucket in which the object resides.
object - Name of the object. For information about how to URL encode
object names to be path safe, see Encoding URI Path Parts.
generation - Selects a specific revision of this object.
copySourceAcl - If true, copies the source object's ACL; otherwise, uses
the bucket's default object ACL. The default is false.
ifGenerationMatch - Makes the operation conditional on whether the
object's one live generation matches the given value. Setting to 0 makes
the operation succeed only if there are no live versions of the object.
ifGenerationNotMatch - Makes the operation conditional on whether none
of the object's live generations match the given value. If no live object
exists, the precondition fails. Setting to 0 makes the operation succeed
only if there is a live version of the object.
ifMetagenerationMatch - Makes the operation conditional on whether the
object's one live metageneration matches the given value.
ifMetagenerationNotMatch - Makes the operation conditional on whether
none of the object's live metagenerations match the given value.
projection - Set of properties to return. Defaults to full.
Possible string values are:
- "full" : Include all properties.
- "noAcl" : Omit the owner, acl property.
userProject - The project to be billed for this request. Required for
Requester Pays buckets.
$fields - Selector specifying which fields to include in a partial
response.
Completes with a Object.
Completes with a commons.ApiRequestError if the API endpoint returned an error.
If the used http.Client completes with an error when making a REST call,
this method will complete with the same error.
Implementation
async.Future<Object> restore(
  core.String bucket,
  core.String object,
  core.String generation, {
  core.bool? copySourceAcl,
  core.String? ifGenerationMatch,
  core.String? ifGenerationNotMatch,
  core.String? ifMetagenerationMatch,
  core.String? ifMetagenerationNotMatch,
  core.String? projection,
  core.String? userProject,
  core.String? $fields,
}) async {
  final queryParams_ = <core.String, core.List<core.String>>{
    'generation': [generation],
    if (copySourceAcl != null) 'copySourceAcl': ['${copySourceAcl}'],
    if (ifGenerationMatch != null) 'ifGenerationMatch': [ifGenerationMatch],
    if (ifGenerationNotMatch != null)
      'ifGenerationNotMatch': [ifGenerationNotMatch],
    if (ifMetagenerationMatch != null)
      'ifMetagenerationMatch': [ifMetagenerationMatch],
    if (ifMetagenerationNotMatch != null)
      'ifMetagenerationNotMatch': [ifMetagenerationNotMatch],
    if (projection != null) 'projection': [projection],
    if (userProject != null) 'userProject': [userProject],
    if ($fields != null) 'fields': [$fields],
  };
  final url_ = 'b/' +
      commons.escapeVariable('$bucket') +
      '/o/' +
      commons.escapeVariable('$object') +
      '/restore';
  final response_ = await _requester.request(
    url_,
    'POST',
    queryParams: queryParams_,
  );
  return Object.fromJson(response_ as core.Map<core.String, core.dynamic>);
}