public function createSpinTree()
{
$root = $this->getRootSkill();
$this->curve = $this->createSkill(2, 'Riding Curve');
$this->curve->addSkillRelatedByParentId($root);
$this->curveBwd = $this->createSkill(8, 'Riding Curve bwd');
$this->curveBwd->addSkillRelatedByParentId($this->curve);
$this->curveBwd->setVariationOf($this->curve);
$this->spin = $this->createSkill(3, 'Spin');
$this->spin->addSkillRelatedByParentId($this->curve);
$this->spinBwd = $this->createSkill(7, 'Spin bwd');
$this->spinBwd->addSkillRelatedByParentId($this->spin);
$this->spinBwd->setVariationOf($this->spin);
$this->spin1ft = $this->createSkill(4, 'Spin 1ft');
$this->spin1ft->addSkillRelatedByParentId($this->spin);
$this->spin1ftExt = $this->createSkill(5, 'Spin 1ft ext');
$this->spin1ftExt->addSkillRelatedByParentId($this->spin1ft);
$this->spin1ftExt->setVariationOf($this->spin1ft);
$this->spin1ftBwd = $this->createSkill(6, 'Spin 1ft bwd');
$this->spin1ftBwd->addSkillRelatedByParentId($this->spin1ft);
$this->spin1ftBwd->setVariationOf($this->spin1ft);
}
