public UICustomizationType withCSSVersion(String cSSVersion) {
        setCSSVersion(cSSVersion);
        return this;
    }
<p>
The CSS version number.
</p>

@param cSSVersion
       The CSS version number.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-cognitoidp/src/main/java/com/amazonaws/services/cognitoidp/model/UICustomizationType.java