S4 method to export genotype (.gen), map (.map), and parameter (fimpute.par) files compatible with [FImpute](https://www.aps.uoguelph.ca/~msargol/fimpute/).
saveFImpute(object, ...)
# S4 method for class 'FImputeExport'
saveFImpute(object)
# S4 method for class 'SNPDataLong'
saveFImpute(object, path)An object of class `FImputeExport` or `SNPDataLong`.
Additional arguments passed to methods.
Output directory. Must be supplied by the caller (e.g. a path
inside tempdir() for examples).
No return value, called for side effects. The function writes the
files data.gen, data.map, and fimpute.par to the
directory path and returns NULL invisibly.