Google Analytics 4 Admin - get list of accounts - php

Question

Trying to use the php library for GA4 Admin - first thing to do is get a list of the accounts available to me. I have 5 analytics accounts under my... account:
Andy Test 1 (old google analytics account - <account id 1>)
Andy Test 2 (old google analytics account - <account id 2>)
Andy Test GA4 - 1 (GA4 account - <account id 3>)
Andy Test GA4 - 2 (GA4 account - <account id 4>)
Andy Test GA4 - 3 (GA4 account - <account id 5>)
I was hoping that this code would do it:
echo("Calling listAccountSummaries:");
foreach( $analyticsAdminServiceClient->listAccountSummaries() as $account_summary )
{
echo(" -- Name: {$account_summary->getName()}" );
echo(" -- Account: {$account_summary->getAccount()}" );
}
echo("End of listAccountSummaries");
What this gives me is:
Calling listAccountSummaries:
-- Name: accountSummaries/236841924
-- Account: accounts/236841924
End of listAccountSummaries
The "listAccounts" function isn't any better:
echo("Calling listAccounts:");
foreach ( $analyticsAdminServiceClient->listAccounts() as $account )
{
echo( " -- " . $account->getName() );
}
echo("End of listAccounts");
Output:
Calling listAccounts:
-- accounts/236841924
End of listAccounts
Why am I not seeing the other accounts? I would understand if these functions left out the older analytics accounts, but why not all 3 of the GA4 accounts?