get method
Retrieves a user.
Request parameters:
userKey - Identifies the user in the API request. The value can be the
user's primary email address, alias email address, or unique user ID.
customFieldMask - A comma-separated list of schema names. All fields
from these schemas are fetched. This should only be set when
projection=custom.
projection - What subset of fields to fetch for this user.
Possible string values are:
- "basic" : Do not include any custom fields for the user.
 - "custom" : Include custom fields from schemas requested in
customFieldMask. - "full" : Include all fields associated with this user.
 
viewType - Whether to fetch the administrator-only or domain-wide public
view of the user. For more information, see [Retrieve a user as a
non-administrator](https://developers.google.com/workspace/admin/directory/v1/guides/manage-users#retrieve_users_non_admin).
Possible string values are:
- "admin_view" : Results include both administrator-only and domain-public fields for the user.
 - "domain_public" : Results only include fields for the user that are publicly visible to other users in the domain.
 
$fields - Selector specifying which fields to include in a partial
response.
Completes with a User.
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<User> get(
  core.String userKey, {
  core.String? customFieldMask,
  core.String? projection,
  core.String? viewType,
  core.String? $fields,
}) async {
  final queryParams_ = <core.String, core.List<core.String>>{
    if (customFieldMask != null) 'customFieldMask': [customFieldMask],
    if (projection != null) 'projection': [projection],
    if (viewType != null) 'viewType': [viewType],
    if ($fields != null) 'fields': [$fields],
  };
  final url_ =
      'admin/directory/v1/users/' + commons.escapeVariable('$userKey');
  final response_ = await _requester.request(
    url_,
    'GET',
    queryParams: queryParams_,
  );
  return User.fromJson(response_ as core.Map<core.String, core.dynamic>);
}