public static async Task <(bool exists, string id)> CognitoUserPoolClientExists(
this AmazonCognitoIdentityProviderClient client,
string userPoolId,
string name)
{
var userPoolClients = await client.ListUserPoolClientsAsync(new ListUserPoolClientsRequest
{
MaxResults = 10,
UserPoolId = userPoolId
});
var matchingClient = userPoolClients.UserPoolClients.FirstOrDefault(x => x.ClientName == name);
return(matchingClient != null, matchingClient?.ClientId);
}