I am developing an R package and it depends on ShortRead package. In particular, I am using sread() function in the ShortRead package. I noticed that the sread() function is one of the "(Legacy) Accessors for ShortRead classes“ (ShortRead manual). What does "legacy" mean? Can I use the sread() function to develop my package? Thanks!

sread() and id() were included on that page in error; 'legacy' functions are those useful only the earliest generation of high-throughput sequencing files.