code: function GraphProgress(graph, graphDescription) {
          assert.object(graph, 'graph');
          assert.string(graphDescription, 'graphDescription');
  
          this.graph = graph;
          this.data = {
              graphId: graph.instanceId,
              nodeId: graph.node,
              graphName: graph.name || 'Not available',
              status: graph._status,
              progress: {
                  description: graphDescription || 'Not available',
              }
          };
          this._calculateGraphProgress();
      }
docs: Creates a new GraphProgress and calculate the graph progress
  @param graph {Object}
  @param graphDescription {String}
  @constructor