private function getLegend(PaletteInterface $palette, $legendName)
    {
        if ($palette->hasLegend($legendName)) {
            return $palette->getLegend($legendName);
        }

        $legend = new Legend($legendName);
        $palette->addLegend($legend);

        return $legend;
    }
private function getLegend(PaletteInterface $palette, $legendName)
    {
        if ($palette->hasLegend($legendName)) {
            return $palette->getLegend($legendName);
        }

        $legend = new Legend($legendName);
        $palette->addLegend($legend);

        return $legend;
    }
private function getLegend ( PaletteInterface $ palette , $ legendName ) { if ( $ palette -> hasLegend ( $ legendName ) ) { return $ palette -> getLegend ( $ legendName ) ; } $ legend = new Legend ( $ legendName ) ; $ palette -> addLegend ( $ legend ) ; return $ legend ; }
Get a legend. Create it if not exists.

@param PaletteInterface $palette    The palette.
@param string           $legendName The name of the legend.

@return LegendInterface
Get a legend . Create it if not exists .