Remarks

If the file name is roads.shp, say, the created files will normally be named

    roads.shp   roads.shx   roads.dbf   roads.cpg   roads.prj

Note that if SplitBigFiles is True and the amount of data is huge, you may instead end up with multiple files with numeric suffixes:

    roads_0.shp   roads_0.shx   roads_0.dbf   roads_0.cpg   roads_0.prj
    roads_1.shp   roads_1.shx   roads_1.dbf   roads_1.cpg   roads_1.prj
    roads_2.shp   roads_2.shx   roads_2.dbf   roads_2.cpg   roads_2.prj
    etc.

where each file is at most 2 GB.