public void setStartedAt(java.util.Date startedAt) {
        this.startedAt = startedAt;
    }
<p>
The epoch time when Amazon Machine Learning marked the <code>DataSource</code> as <code>INPROGRESS</code>.
<code>StartedAt</code> isn't available if the <code>DataSource</code> is in the <code>PENDING</code> state.
</p>

@param startedAt
       The epoch time when Amazon Machine Learning marked the <code>DataSource</code> as <code>INPROGRESS</code>.
       <code>StartedAt</code> isn't available if the <code>DataSource</code> is in the <code>PENDING</code>
       state.
aws-java-sdk-machinelearning/src/main/java/com/amazonaws/services/machinelearning/model/GetDataSourceResult.java