Annotations and code style

plugins/org.jkiss.dbeaver.model/src/org/jkiss/dbeaver/model/struct/DBSObject.java

@@ -17,7 +17,6 @@
 
 package org.jkiss.dbeaver.model.struct;
 
-import org.jkiss.code.Nullable;
 import org.jkiss.dbeaver.model.DBPDataSource;
 import org.jkiss.dbeaver.model.DBPNamedObject;
 import org.jkiss.dbeaver.model.DBPObjectWithDescription;
@@ -37,7 +36,6 @@ public interface DBSObject extends DBPNamedObject, DBPObjectWithDescription, DBP
      * @return parent object or null
      */
     @DPIContainer
-    @Nullable
 	DBSObject getParentObject();
 
     /**