public GetContactResult withPlan(Plan plan) {
        setPlan(plan);
        return this;
    }
<p>
Details about the specific timing or stages and targets of the escalation plan or engagement plan.
</p>

@param plan
       Details about the specific timing or stages and targets of the escalation plan or engagement plan.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-ssmcontacts/src/main/java/com/amazonaws/services/ssmcontacts/model/GetContactResult.java