error in the documentation?¿

ms-help://MS.VSCC.2003/MS.MSDNQTR.2003APR.1033/cpref/html/frlrfsystemdatadat
aviewclassfindtopic1.htm

DataView.Find Method (Object) [c#]

etc.

public int Find(
object key
);

etc.

Return Value

The index of the row in the DataView containing the sort key value
specified; otherwise a null value if the sort key value does not exist.

And now I ask: how can an int method (value type) return a null (reference
type)?
I think it will return -1.

Am I wrong?

Regards. Samuel.