I'm doing an export of the 3D geometry and for my purposes I need it to be as low poly as possible. I'd like to be able to convert all fillets to chamfers (or even better, set the fillet radius to be zero). The GUI has an option to Convert Fillet to Chamfer, and vice versa, but I'd like to be able to do this using the API, without any dialogs appearing. 

I can't suppress certain fillets as they have child features that depend on them but converting them from Fillets to Chamfers works really well and has a minimum number of faces when converted to triangles for export. The built-in SOLIDWORKS Simplify feature removes too much for my test case.

Can anyone show me how to get the effect of "Convert Fillet to Chamfer" using the API (in C# ideally)?