public void setCreatedBefore(java.util.Date createdBefore) {
        this.createdBefore = createdBefore;
    }
<p>
The date and time before which the virtual clusters are created.
</p>

@param createdBefore
       The date and time before which the virtual clusters are created.
aws-java-sdk-emrcontainers/src/main/java/com/amazonaws/services/emrcontainers/model/ListVirtualClustersRequest.java