src/Soluble/Normalist/Synthetic/Table.php
public function relation()
    {
        if ($this->relation === null) {
            $this->relation = new Table\Relation($this);
        }
        return $this->relation;
    }
public function relation()
    {
        if ($this->relation === null) {
            $this->relation = new Table\Relation($this);
        }
        return $this->relation;
    }
Return table relation reader

@return Table\Relation