[Bioc-devel] Hunting for the subset generic definition?

Hi folks,

I'm looking to define a `subset` method on an S4 class of mine, but
can't find where to import the generic from.

I can't seem to find it anywhere in:

  * BiocGenerics
  * S4Vectors
  * XVector (

Even though S4Vectors has a:

  setMethod("subset", "DataTable", ...)

It's not clear to me where it pulled the appropriate
`setGeneric("subset", ...)` from.

Can anyone provide a pointer?

Thanks,
-steve

Steve Lianoglou
Computational Biologist
Genentech