Term	Description	Type	Properties	Example	Enum
variantAlternativeIds	Definition of an external reference class. Provenance: GA4GH Phenopackets v2 ExternalReference	array	id, notes, reference	[{"id": "dbSNP:rs587780345", "notes": "dbSNP id", "reference": "https://www.ncbi.nlm.nih.gov/snp/rs587780345"}, {"id": "ClinGen:CA152954", "notes": "ClinGen Allele Registry id", "reference": "http://reg.clinicalgenome.org/redmine/projects/registry/genboree_registry/by_caid?caid=CA152954"}, {"id": "UniProtKB:P35557#VAR_003699", "reference": "https://www.uniprot.org/uniprot/P35557#VAR_003699"}], [{"id": "OMIM:164757.0001", "reference": "https://www.omim.org/entry/164757#0001"}]	NA