The standard behavior of the Eclipse workbench is to preserve the set of open files between invocations, and attempt to reopen those same files on restart. If any of the files is missing, then a placeholder editor appears showing an error message about the missing file. We'd like to change the behavior of our Eclipse RCP application to just silently skip any missing files instead. We're already writing our own `IApplication`, `WorkbenchAdvisor`, etc; these classes get to inject various behaviors into the platform, but I haven't found a way to accomplish these through these classes. How could we implement the desired behavior?