code: public static boolean createGraph(Connection connection,
                                        String tableName,
                                        String spatialFieldName) throws SQLException {
          // The default tolerance is zero.
          return createGraph(connection, tableName, spatialFieldName, 0.0);
      }
docs: Create the nodes and edges tables from the input table containing
  LINESTRINGs in the given column.
  <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
  @param spatialFieldName Name of column containing LINESTRINGs
  @return true if both output tables were created
  @throws SQLException