def delete_file(self, file_id, file_etag=None):
return self( join('<STR_LIT>', bytes(file_id)), method='<STR_LIT>',<EOL>headers={'<STR_LIT>': file_etag} if file_etag else dict() )<EOL>
Delete specified file.
                Pass file_etag to avoid race conditions (raises error 412).