batchCreate method
      
Future<BatchCreateSessionsResponse> 
batchCreate(
    
- BatchCreateSessionsRequest request,
- String database, {
- String? $fields,
Creates multiple new sessions.
This API can be used to initialize a session cache on the clients. See https://goo.gl/TgSFN2 for best practices on session cache management.
request - The metadata request object.
Request parameters:
database - Required. The database in which the new sessions are created.
Value must have pattern
^projects/\[^/\]+/instances/\[^/\]+/databases/\[^/\]+$.
$fields - Selector specifying which fields to include in a partial
response.
Completes with a BatchCreateSessionsResponse.
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<BatchCreateSessionsResponse> batchCreate(
  BatchCreateSessionsRequest request,
  core.String database, {
  core.String? $fields,
}) async {
  final body_ = convert.json.encode(request);
  final queryParams_ = <core.String, core.List<core.String>>{
    if ($fields != null) 'fields': [$fields],
  };
  final url_ =
      'v1/' + core.Uri.encodeFull('$database') + '/sessions:batchCreate';
  final response_ = await _requester.request(
    url_,
    'POST',
    body: body_,
    queryParams: queryParams_,
  );
  return BatchCreateSessionsResponse.fromJson(
    response_ as core.Map<core.String, core.dynamic>,
  );
}