public void setMulticastDomainAssociations(java.util.Collection<TransitGatewayMulticastDomainAssociation> multicastDomainAssociations) {
        if (multicastDomainAssociations == null) {
            this.multicastDomainAssociations = null;
            return;
        }

        this.multicastDomainAssociations = new com.amazonaws.internal.SdkInternalList<TransitGatewayMulticastDomainAssociation>(multicastDomainAssociations);
    }
<p>
Information about the multicast domain associations.
</p>

@param multicastDomainAssociations
       Information about the multicast domain associations.
aws-java-sdk-ec2/src/main/java/com/amazonaws/services/ec2/model/GetTransitGatewayMulticastDomainAssociationsResult.java