public ContentAssociationSummary withContentId(String contentId) {
        setContentId(contentId);
        return this;
    }
<p>
The identifier of the content.
</p>

@param contentId
       The identifier of the content.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-qconnect/src/main/java/com/amazonaws/services/qconnect/model/ContentAssociationSummary.java