public void setCluster(String cluster) {
        this.cluster = cluster;
    }
<p>
The short name or full Amazon Resource Name (ARN) of the cluster to modify the capacity provider settings for. If
you don't specify a cluster, the default cluster is assumed.
</p>

@param cluster
       The short name or full Amazon Resource Name (ARN) of the cluster to modify the capacity provider settings
       for. If you don't specify a cluster, the default cluster is assumed.
aws-java-sdk-ecs/src/main/java/com/amazonaws/services/ecs/model/PutClusterCapacityProvidersRequest.java