code: @Override
      public void setScale(IAtomContainerSet moleculeSet) {
          double bondLength = AverageBondLengthCalculator.calculateAverageBondLength(moleculeSet);
          double scale = this.calculateScaleForBondLength(bondLength);
  
          // store the scale so that other components can access it
          this.rendererModel.getParameter(Scale.class).setValue(scale);
      }
docs: Set the scale for an {@link IAtomContainerSet}. It calculates the average bond length
  of the model and calculates the multiplication factor to transform this
  to the bond length that is set in the RendererModel.
  
  @param moleculeSet the {@link IAtomContainerSet} for what to set the scale