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CS269: HW/SW Engineering of Embedded Systems, Winter02
public class MetaModelBackend
    
Structure of a Visitor (1)
•File: MetaModelBackend.java
package metropolis.metamodel.backends;
import metropolis.*;
import metropolis.metamodel.*;
import metropolis.metamodel.nodetypes.*;
extends MetaModelVisitor {
public MetaModelBackend() {
        super(TM_CUSTOM);  // traversal method
     }