Limit (missing documentation) => an integer, default value 1000, Only download at most this many examples
Prefix (missing documentation) => a string, default value ./, The directory to place the resulting file, should end in a slash, or be the empty string
FileName (missing documentation) => a string, default value null, If not null, then use this as the filename (ignoring also the Prefix option)
Expected (missing documentation) => an integer, default value null, The expected number of examples. This is tested, and an error is given if the number retrieved is different
Outputs:
filename, a string, The name of the file to where the examples are written
Consequences:
A file is written in the directory given by prefix. The name is made out of the arguments