public InstanceTypeSpecification withInstanceType(String instanceType) {
        setInstanceType(instanceType);
        return this;
    }
<p>
The Amazon EC2 instance type, for example <code>m3.xlarge</code>.
</p>

@param instanceType
       The Amazon EC2 instance type, for example <code>m3.xlarge</code>.
@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/InstanceTypeSpecification.java