Some tech debt to consider/ prioritize

[d-callan]

the Collection constructors should take a single object rather than three and work like collectionBuilder currently does

consider how to improve manual mapping of things like 'MetagenomicAssay' to 'WGS'.. internally called dataSourceName here

there are a number of *Builder functions that could probably be proper S4 methods or constructors or something

[d-callan]

on the subject of the mapping of things like 'MetagenomicAssay' to 'WGS'.. what im currently doing didnt work for uganda maternal, bc that study has two different 16s assay entities for different regions. we should be careful to handle that case well when we get to this ticket.