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This is my java class where I have to use hash map for getting key-value:

@XmlRootElement
public class Combo {

    private Map<Combo, List<Combo>> businessDomainAndBusinessSubDomainsPair = new HashMap<Combo, List<Combo>>();

    public Map<Combo, List<Combo>> getBusinessDomainAndBusinessSubDomainsPair() {
        return businessDomainAndBusinessSubDomainsPair;
    }
    public void setBusinessDomainAndBusinessSubDomainsPair(
            Map<Combo, List<Combo>> businessDomainAndBusinessSubDomainsPair) {
        this.businessDomainAndBusinessSubDomainsPair = businessDomainAndBusinessSubDomainsPair;
    }
}

But in angular code I am getting this error on debug: enter image description here

I tried using LinkedHashMap also but still I am getting error. Can any one please suggest a solution for this.

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