public void setCreatedAt(java.util.Date createdAt) {
        this.createdAt = createdAt;
    }
<p>
The time that the <code>DataSource</code> was created. The time is expressed in epoch time.
</p>

@param createdAt
       The time that the <code>DataSource</code> was created. The time is expressed in epoch time.
aws-java-sdk-machinelearning/src/main/java/com/amazonaws/services/machinelearning/model/GetDataSourceResult.java