code: public boolean isLinked(String featureTable, String tileTable) {
  		FeatureTileLink link = getLink(featureTable, tileTable);
  		return link != null;
  	}
docs: Determine if the feature table is linked to the tile table
  
  @param featureTable
  feature table
  @param tileTable
  tile table
  @return true if linked