#' Parse optional params to get the type of DNA
#'
#' @param ... Optional parameters
#'
#' @return a character sting
#'
get_dna_datatype <- function(...){
if (length(list(...)) > 0) {
opt_params <- list(...)
dna_datatype <- opt_params$dna_datatype
} else {
dna_datatype <- 'cdna'
}
return(dna_datatype)
}
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