154      * @param int        $generations
158     public function getPersonLi(Individual $person, int $generations = 0): string  argument
160         $icon     = $generations > 0 ? 'icon-minus' : 'icon-plus';
162         $spouses  = $generations > 0 ? $this->loadSpouses($person, 0) : '';
185      * @param int        $generations
189     public function getFamilyLi(Family $family, Individual $person, int $generations = 0): string  argument
213             '<div>' . $this->loadChildren($family, $generations) . '</div>' .
221      * @param int        $generations
225     public function loadSpouses(Individual $individual, int $generations): string  argument
230                 $out .= $this->getFamilyLi($family, $individual, $generations - 1);
244      * @param int    $generations
248     public function loadChildren(Family $family, int $generations): string  argument
256                     $out .= $this->getPersonLi($child, $generations - 1);