public DomainFile getSavedDomainFile() throws FileNotFoundException {
		if (domainFile != null && !domainFile.exists()) {
			throw new FileNotFoundException("Saved DomainFile no longer exists: " + domainFile);
		}
		return domainFile;
	}
Gets the loaded {@link DomainObject}'s associated {@link DomainFile} that was
{@link #save(Project, MessageLog, TaskMonitor) saved}

@return The loaded {@link DomainObject}'s associated saved {@link DomainFile}, or null if 
  was not saved
@throws FileNotFoundException If the loaded {@link DomainObject} was saved but the associated
  {@link DomainFile} no longer exists
@see #save(Project, MessageLog, TaskMonitor)
Ghidra/Features/Base/src/main/java/ghidra/app/util/opinion/Loaded.java