code: function load(dotGraph, appendTo) {
    var dotAST = parseDot(dotGraph);
    if (dotAST.length > 1 && appendTo !== undefined) {
      throw new Error('Dot file contains multiple graphs. Cannot use `saveTo` in this case');
    }
  
    if (!appendTo) {
      appendTo = require('ngraph.graph')();
    }
    // by default load will only load first graph:
  
    return loadOne(appendTo, dotAST[0]);
  }
docs: Loads graph from 'dot' string.
  
  @param {String} dotGraph a graph in `dot` format
  @param {ngraph.graph=} appendTo optional argument if you want to append parsed
  graph to an old graph.
  
  @return {ngraph.graph} Parsed graph
  
  @see https://en.wikipedia.org/wiki/DOT_(graph_description_language)
  @see https://github.com/anvaka/ngraph.graph