code: public static boolean createGraph(Connection connection,
                                        String tableName) throws SQLException {
          return createGraph(connection, tableName, null);
      }
docs: Create the nodes and edges tables from the input table containing
  LINESTRINGs.
  <p/>
  Since no column is specified in this signature, we take the first
  geometry column we find.
  <p/>
  If the input table has name 'input', then the output tables are named
  'input_nodes' and 'input_edges'.
  
  @param connection Connection
  @param tableName  Input table containing LINESTRINGs
  @return true if both output tables were created
  @throws SQLException