public void setCreationTime(java.util.Date creationTime) {
        this.creationTime = creationTime;
    }
<p>
The time that the file system was created, in seconds (since 1970-01-01T00:00:00Z).
</p>

@param creationTime
       The time that the file system was created, in seconds (since 1970-01-01T00:00:00Z).
aws-java-sdk-efs/src/main/java/com/amazonaws/services/elasticfilesystem/model/UpdateFileSystemResult.java