docs: private void writeNode(Node node) {
          try {
              this.pStmtNodesC.setLong(1, node.getId());
              this.pStmtNodesC.setDouble(2, node.getLatitude());
              this.pStmtNodesC.setDouble(3, node.getLongitude());
  
              this.pStmtNodesC.addBatch();
  
              if (this.nNodes % BATCH_LIMIT == 0) {
                  this.pStmtNodesC.executeBatch();
  
                  this.pStmtNodesC.clearBatch();
              }
          } catch (SQLException e) {
              e.printStackTrace();
          }
      }