public void notifyEdit(ByteEditInfo edit) {
		if (tool.isVisible(this)) {
			plugin.firePluginEvent(new ByteBlockChangePluginEvent(plugin.getName(), edit, program));
		}
	}
Called when the memory in the current program changes, from the domain object listener.
Ghidra/Features/ByteViewer/src/main/java/ghidra/app/plugin/core/byteviewer/ProgramByteViewerComponentProvider.java