private function collectSequences(SchemaDiff $schemaDiff)
    {
        foreach ($schemaDiff->getCreatedSequences() as $sequence) {
            $this->createSequenceQueries = array_merge(
                $this->createSequenceQueries,
                $this->platform->getCreateSequenceSQLQueries($sequence)
            );
        }

        foreach ($schemaDiff->getDroppedSequences() as $sequence) {
            $this->dropSequenceQueries = array_merge(
                $this->dropSequenceQueries,
                $this->platform->getDropSequenceSQLQueries($sequence)
            );
        }
    }