Gets a writable pathname.
## Static method (use this):
## Arguments$getWritablePathname(..., mustExist=FALSE, mustNotExist=FALSE, mkdirs=TRUE,
##   maxTries=5L)## Don't use the below:
# S3 method for Arguments
getWritablePathname(static, ..., mustExist=FALSE, mustNotExist=FALSE, mkdirs=TRUE,
  maxTries=5L)
Arguments passed to *getReadablePathname().
If TRUE and the pathname does not exists,
    an Exception is thrown, otherwise not.
Returns a character string of the pathname of the file.
 If the argument was invalid an Exception is thrown.
If any argument in ... is NA, an exception is thrown.
*getReadablePathname().
  filePath.
  mkdirs.
  For more information see Arguments.