Fixed command interfaces

classes/Commands/ClassCreateCommand.php

@@ -110,7 +110,7 @@ class ClassCreateCommand extends Command {
         ];
     }
 
-    protected function execute(InputInterface $input, OutputInterface $output) {
+    protected function execute(InputInterface $input, OutputInterface $output): int {
         if (!CredentialManager::isConfigured())
             throw new \Exception("The 'cloudobjects' CLI tool must be installed and authorized.");
 
@@ -238,6 +238,7 @@ class ClassCreateCommand extends Command {
             $output->writeln("Calling cloudobjects ...");
             passthru("cloudobjects configuration-job:create ".$fullName.".xml");
         }
+        return Command::SUCCESS;
     }
 
 }