public void setRetentionMode(String retentionMode) {
        this.retentionMode = retentionMode;
    }
<p>
The retention mode for the run.
</p>

@param retentionMode
       The retention mode for the run.
@see RunRetentionMode
aws-java-sdk-omics/src/main/java/com/amazonaws/services/omics/model/StartRunRequest.java