This function will let you use a simple character vector (e.g. 'hg19') to load and then return BSgenome objects. This lets you avoid having to use the more complex annotation for a complete BSgenome object (e.g. BSgenome.Hsapiens.UCSC.hg38.masked)
loadBSgenome(genomeBuild, masked = TRUE)
A BSgenome object corresponding to the provided genome build.
if (FALSE) { # \dontrun{
bsg = loadBSgenome('hg19')
} # }