src/SchemaAnalyzer.php
private function isInheritanceRelationship(ForeignKeyConstraint $fk)
    {
        if (!$fk->getLocalTable()->hasPrimaryKey()) {
            return false;
        }
        $fkColumnNames = $fk->getLocalColumns();
        $pkColumnNames = $fk->getLocalTable()->getPrimaryKeyColumns();

        sort($fkColumnNames);
        sort($pkColumnNames);

        return $fkColumnNames == $pkColumnNames;
    }
private function isInheritanceRelationship(ForeignKeyConstraint $fk)
    {
        if (!$fk->getLocalTable()->hasPrimaryKey()) {
            return false;
        }
        $fkColumnNames = $fk->getLocalColumns();
        $pkColumnNames = $fk->getLocalTable()->getPrimaryKeyColumns();

        sort($fkColumnNames);
        sort($pkColumnNames);

        return $fkColumnNames == $pkColumnNames;
    }
Returns true if this foreign key represents an inheritance relationship,
i.e. if this foreign key is based on a primary key.

@param ForeignKeyConstraint $fk

@return true