Man pages matching name bio::asn1::sequence::indexer in section 3pm:

Bio::ASN1::Sequence::Indexer.3pm.en	debian 10 / libbio-asn1-entrezgene-perl
Bio::ASN1::Sequence::Indexer.3pm.en	debian 11 / libbio-asn1-entrezgene-perl
Bio::ASN1::Sequence::Indexer.3pm.en	debian 12 / libbio-asn1-entrezgene-perl