void invalidate() {
		viewToOriginalMap = null;
		originalToViewMap = null;
		// delay reload until needed
	}
Construct database-backed bidirectional datatype ID map
@param dbHandle database handle for {@link CompositeViewerDataTypeManager}
@param errorHandler error handler
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/compositeeditor/IDMapDB.java