package com.paritytrading.parity.client;

public interface EventVisitor {

    void visit(Event.OrderAccepted event);

    void visit(Event.OrderRejected event);

    void visit(Event.OrderExecuted event);

    void visit(Event.OrderCanceled event);

}

package com.paritytrading.parity.client;

interface EventVisitor {

    void visit(Event.OrderAccepted event);

    void visit(Event.OrderRejected event);

    void visit(Event.OrderExecuted event);

    void visit(Event.OrderCanceled event);

}

Clean up 'EventVisitor'