protected boolean originalCompositeExists() {
		return getExistingOriginalComposite() != null;
	}
Determine if the original composite exists within the original datatype manager.
NOTE: If this method returns true, the current datatype which exists within the original
datatype manager will be returned by {@link #getOriginalComposite()}, although its name
may differ.
@return true if datatype found else false
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/compositeeditor/CompositeViewerModel.java