Not exported to avoid unintended modifications of the DB.
getEnsemblTranscriptIds(organism, release, gv, ddir, dbCref, canChromosomes)
character vector of 1 element corresponding to the organism of interest (e.g. "Homo sapiens")
the Ensembl release of interest (e.g. "83")
the genome version (e.g. "38")
path to the directory where the data should be saved
a named vector of characters providing cross-reference DB of interest. These DB are also used to find indirect ID associations.
canonical chromosmomes to be considered as preferred ID (e.g. c(1:22, "X", "Y", "MT") for human)