How to use the xlwings.utils.VBAWriter function in xlwings

def generate_vba_wrapper(module_name, module, f):

    vba = VBAWriter(f)

    for svar in map(lambda attr: getattr(module, attr), dir(module)):
        if hasattr(svar, '__xlfunc__'):
            xlfunc = svar.__xlfunc__
            xlret = xlfunc['ret']
            fname = xlfunc['name']
            call_in_wizard = xlfunc['call_in_wizard']
            volatile = xlfunc['volatile']

            ftype = 'Sub' if xlfunc['sub'] else 'Function'

            func_sig = ftype + " " + fname + "("

            first = True
            vararg = ''
            n_args = len(xlfunc['args'])

def write_vba_line(self, vba_line):
        if len(vba_line) > VBAWriter.MAX_VBA_LINE_LENGTH:
            separator_index = VBAWriter.get_separator_index(vba_line)
            self.f.write(vba_line[:separator_index] + VBAWriter.VBA_LINE_SPLIT)
            self.write_vba_line(vba_line[separator_index:])
        else:
            self.f.write(vba_line)

def write_vba_line(self, vba_line):
        if len(vba_line) > VBAWriter.MAX_VBA_LINE_LENGTH:
            separator_index = VBAWriter.get_separator_index(vba_line)
            self.f.write(vba_line[:separator_index] + VBAWriter.VBA_LINE_SPLIT)
            self.write_vba_line(vba_line[separator_index:])
        else:
            self.f.write(vba_line)

def block(self, template, **kwargs):
        return VBAWriter.Block(self, template.format(**kwargs))

def write_vba_line(self, vba_line):
        if len(vba_line) > VBAWriter.MAX_VBA_LINE_LENGTH:
            separator_index = VBAWriter.get_separator_index(vba_line)
            self.f.write(vba_line[:separator_index] + VBAWriter.VBA_LINE_SPLIT)
            self.write_vba_line(vba_line[separator_index:])
        else:
            self.f.write(vba_line)