code: public Set<? extends Table> getImportedTables() throws SQLException {
  		synchronized(getImportedTablesLock) {
  			if(getImportedTablesCache==null) {
  				Set<Table> newImportedTables = new LinkedHashSet<>();
  				Catalog catalog = schema.getCatalog();
  				DatabaseMetaData metaData = catalog.getMetaData();
  				try (ResultSet results = schema.getCatalog().getMetaData().getMetaData().getImportedKeys(schema.getCatalog().getName(), schema.getName(), name)) {
  					while(results.next()) {
  						String pkCat = results.getString("PKTABLE_CAT");
  						Catalog pkCatalog = pkCat==null ? catalog : metaData.getCatalog(pkCat);
  						newImportedTables.add(
  							pkCatalog
  							.getSchema(results.getString("PKTABLE_SCHEM"))
  							.getTable(results.getString("PKTABLE_NAME"))
  						);
  					}
  				}
  				getImportedTablesCache = AoCollections.optimalUnmodifiableSet(newImportedTables);
  			}
  			return getImportedTablesCache;
  		}
  	}
docs: Gets the set of tables that this table depends on.
  
  This is based on getImportedKeys