public Collaboration withCreateTime(java.util.Date createTime) {
        setCreateTime(createTime);
        return this;
    }
<p>
The time when the collaboration was created.
</p>

@param createTime
       The time when the collaboration was created.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-cleanrooms/src/main/java/com/amazonaws/services/cleanrooms/model/Collaboration.java