public void setDatasetArns(java.util.Collection<String> datasetArns) {
        if (datasetArns == null) {
            this.datasetArns = null;
            return;
        }

        this.datasetArns = new java.util.ArrayList<String>(datasetArns);
    }
<p>
An array of Amazon Resource Names (ARNs) of the datasets that you want to include in the dataset group.
</p>

@param datasetArns
       An array of Amazon Resource Names (ARNs) of the datasets that you want to include in the dataset group.
aws-java-sdk-forecast/src/main/java/com/amazonaws/services/forecast/model/CreateDatasetGroupRequest.java