So far, I'm not able to do anything to provision a WikiPage with Visual Studio.
The most recent avenue was to try calling
but this fails (regardless of the SPTemplateFileType) with an error that says "The page you selected contains a list that does not exist. It may have been deleted by another user."This error makes no sense at all.
It shouldn't be this difficult - after all, it seems to me to be a routine thing to do.
If there is a tried and true way to do this (putting the file in a module doesn't work, either), please enlighten me.