public Cluster withStepConcurrencyLevel(Integer stepConcurrencyLevel) {
        setStepConcurrencyLevel(stepConcurrencyLevel);
        return this;
    }
<p>
Specifies the number of steps that can be executed concurrently.
</p>

@param stepConcurrencyLevel
       Specifies the number of steps that can be executed concurrently.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-emr/src/main/java/com/amazonaws/services/elasticmapreduce/model/Cluster.java