public void setCreatedAt(java.util.Date createdAt) {
        this.createdAt = createdAt;
    }
<p>
Returns a timestamp for creation date and time of the transformer.
</p>

@param createdAt
       Returns a timestamp for creation date and time of the transformer.
aws-java-sdk-b2bi/src/main/java/com/amazonaws/services/b2bi/model/GetTransformerResult.java