/**
* Returns the metadata keys that allow identification of this device profile.
*
* <p>Note: if the returned array contains an empty string value (not <code>null</code>, but
* <code>""</code>!), it means that this profile can be used for <em>all</em> devices.
*
* @return an array of metadata keys this profile supports, never <code>null</code>.
*/
public String[] getDeviceMetadataKeys() {
final String rawValue = this.properties.get(DEVICE_METADATA_KEYS);
return StringUtils.tokenizeQuotedStrings(rawValue, ", ");
}
