@Override
	public void add(Object obj, DropTargetDropEvent event, DataFlavor f) {
		Point p = event.getLocation();
		ProgramLocation loc = listingPanel.getProgramLocation(p);
		CodeViewerActionContext context = new CodeViewerActionContext(this, loc);
		if (loc != null && curDropProvider != null) {
			curDropProvider.add(context, obj, f);
		}
	}
TODO: Remove or rename this to something that accommodates redirecting writes, e.g., to a
debug target process, particularly for assembly, which may involve code unit modification
after a successful write, reported asynchronously :/ .

@return true if this listing represents a read-only view
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/codebrowser/CodeViewerProvider.java