legacy/src/main/java/thredds/catalog/InvAccess.java
public String getStandardUrlName() {
    URI uri = getStandardUri();
    if (uri == null) return null;
    return uri.toString();
  }
public String getStandardUrlName() {
    URI uri = getStandardUri();
    if (uri == null) return null;
    return uri.toString();
  }
Get the standard URL, with resolution if the URL is reletive.
catalog.resolveURI( getUnresolvedUrlName())

@return URL string, or null if error.