Pinq\Analysis\ITypeSystem::getCommonAncestorType PHP Метод

    public function getCommonAncestorType(IType $type, IType $otherType);

 public function visitTernary(O\TernaryExpression $expression)
 {
     $this->walk($expression->getCondition());
     $this->walk($expression->getIfTrue());
     $this->walk($expression->getIfFalse());
     $this->analysis[$expression] = $this->typeSystem->getCommonAncestorType($this->analysis[$expression->hasIfTrue() ? $expression->getIfTrue() : $expression->getCondition()], $this->analysis[$expression->getIfFalse()]);
 }