public java.util.List<Configuration> getConfigurations() {
        if (configurations == null) {
            configurations = new com.amazonaws.internal.SdkInternalList<Configuration>();
        }
        return configurations;
    }
<p>
A configuration classification that applies when provisioning cluster instances, which can include configurations
for applications and software bundled with Amazon EMR.
</p>

@return A configuration classification that applies when provisioning cluster instances, which can include
        configurations for applications and software bundled with Amazon EMR.
aws-java-sdk-emr/src/main/java/com/amazonaws/services/elasticmapreduce/model/InstanceTypeSpecification.java