public void setCreationDate(java.util.Date creationDate) {
        this.creationDate = creationDate;
    }
<p>
The creation date of a state machine version.
</p>

@param creationDate
       The creation date of a state machine version.
aws-java-sdk-stepfunctions/src/main/java/com/amazonaws/services/stepfunctions/model/StateMachineVersionListItem.java