This function returns the keys.
keys(x, keytype, ...)
x
LRBaseDb object such as LRBase.Mmu.eg.db
LRBaseDb
LRBase.Mmu.eg.db
keytype
LRBaseDb What kind of key user want to specify
...
LRBaseDb Other parameter
The keys for using select functions
Koki Tsuyuzaki
showMethods("keys")