code: function LGraph(o) {
          if (LiteGraph.debug) {
              console.log("Graph created");
          }
          this.list_of_graphcanvas = null;
          this.clear();
  
          if (o) {
              this.configure(o);
          }
      }
docs: ********************************************************************************* LGraph CLASS ********************************************************************************* 
  LGraph is the class that contain a full graph. We instantiate one and add nodes to it, and then we can run the execution loop.
  
  @class LGraph
  @constructor
  @param {Object} o data from previous serialization [optional]