public java.util.List<InstanceTypeConfig> getInstanceTypeConfigs() {
        if (instanceTypeConfigs == null) {
            instanceTypeConfigs = new com.amazonaws.internal.SdkInternalList<InstanceTypeConfig>();
        }
        return instanceTypeConfigs;
    }
<p>
The instance type configurations that define the Amazon EC2 instances in the instance fleet.
</p>

@return The instance type configurations that define the Amazon EC2 instances in the instance fleet.
aws-java-sdk-emr/src/main/java/com/amazonaws/services/elasticmapreduce/model/InstanceFleetConfig.java