[dev] Error handling in OTRS

Hello, OTRS devs! It seems there is a fundamental flaw of error handling in OTRS. Currently, many subroutines (methods) use "return;" when something goes wrong. It's okay but "return;" returns undef in scalar context and empty list in list context. Let me show a problem: my %PID = $PIDObject->PIDGet( Name => 'PostMasterPOP3', ); Ok. Let's assume now that your %PID is empty. But why it's empty? Because there is no such PID or because you've got an error (some DB error for example)? There is no any error flags or something, what you can check.