clearGraph() {
    self.irGraph_ = null;
    self.graph_ = null;
    if (self.graphView_) {
      self.graphView_.destroy();
      self.graphView_ = null;
    }
  }
/**
   * Clears the fields containing graph elements (cyctoscape and IR graph) and
   * clears the visualization window.
   */
Clears the fields containing graph elements (cyctoscape and IR graph) and
clears the visualization window.
Clears the fields containing graph elements ( cyctoscape and IR graph ) and clears the visualization window .
clearGraph() {
    self.irGraph_ = null;
    self.graph_ = null;
    if (self.graphView_) {
      self.graphView_.destroy();
      self.graphView_ = null;
    }
  }
clearGraph ( ) { self . irGraph_ = null ; self . graph_ = null ; if ( self . graphView_ ) { self . graphView_ . destroy ( ) ; self . graphView_ = null ; } }
Clears the fields containing graph elements (cyctoscape and IR graph) and
 clears the visualization window.
Clears the fields containing graph elements ( cyctoscape and IR graph ) and clears the visualization window .