Lists the user pools associated with an AWS account.
cognitoidentityprovider_list_user_pools(NextToken, MaxResults)
An identifier that was returned from the previous call to this operation, which can be used to return the next set of items in the list.
[required] The maximum number of results you want the request to return when listing the user pools.
svc$list_user_pools( NextToken = "string", MaxResults = 123 )