public void setMetadata(String metadata) {
        this.metadata = metadata;
    }
<p>
The metadata of the <code>AppInstance</code>.
</p>

@param metadata
       The metadata of the <code>AppInstance</code>.
aws-java-sdk-chimesdkidentity/src/main/java/com/amazonaws/services/chimesdkidentity/model/AppInstanceSummary.java