checkDeployed method
Check that the program has been deployed to the cluster and is an executable program.
Throws a ProgramException if pubkey does not refer to a valid program.
Implementation
Future<void> checkDeployed(final Connection connection) async {
final AccountInfo? programInfo = await connection.getAccountInfo(pubkey);
if (programInfo == null) {
throw ProgramException(
'The program $runtimeType ($pubkey) has not been deployed.');
} else if (!programInfo.executable) {
throw ProgramException(
'The program $runtimeType ($pubkey) is not executable.');
}
}