public EventSourceMappingConfiguration withStartingPositionTimestamp(java.util.Date startingPositionTimestamp) {
        setStartingPositionTimestamp(startingPositionTimestamp);
        return this;
    }
<p>
With <code>StartingPosition</code> set to <code>AT_TIMESTAMP</code>, the time from which to start reading.
<code>StartingPositionTimestamp</code> cannot be in the future.
</p>

@param startingPositionTimestamp
       With <code>StartingPosition</code> set to <code>AT_TIMESTAMP</code>, the time from which to start reading.
       <code>StartingPositionTimestamp</code> cannot be in the future.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-lambda/src/main/java/com/amazonaws/services/lambda/model/EventSourceMappingConfiguration.java