private List<DomainFile> getChangedFiles(List<DomainFile> data) {
		List<DomainFile> changedFiles = new ArrayList<>();
		for (DomainFile domainFile : data) {
			if (domainFile.isChanged()) {
				changedFiles.add(domainFile);
			}
		}
		return changedFiles;
	}
menu listener for File | Close Project...
<p>
This method will always save the FrontEndTool and project, but not the data unless 
{@code confirmClose} is called.

@param isExiting true if we are closing the project because 
Ghidra is exiting
@return false if user cancels the close operation
Ghidra/Framework/Project/src/main/java/ghidra/framework/main/FileActionManager.java