public UpdateRotationRequest withContactIds(java.util.Collection<String> contactIds) {
        setContactIds(contactIds);
        return this;
    }
<p>
The Amazon Resource Names (ARNs) of the contacts to include in the updated rotation.
</p>
<p>
The order in which you list the contacts is their shift order in the rotation schedule.
</p>

@param contactIds
       The Amazon Resource Names (ARNs) of the contacts to include in the updated rotation. </p>
       <p>
       The order in which you list the contacts is their shift order in the rotation schedule.
@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/UpdateRotationRequest.java