public void setInstanceType(String instanceType) {
        this.instanceType = instanceType;
    }
<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>.
aws-java-sdk-emr/src/main/java/com/amazonaws/services/elasticmapreduce/model/InstanceTypeSpecification.java