--- /dev/null
+package org.simantics.structural.synchronization.utils;
+
+/**
+ * Stores state information of removed modules.
+ *
+ * @author Hannu Niemistö
+ */
+public interface StateUndoContextBase {
+
+ public void saveState(Solver solver, int componentId, String uid);
+ public boolean loadState(Solver solver, int componentId, String uid);
+
+}