def assemble(self):
    text = []
    if self.includes:
        text.extend(self.includes)
        text.extend([hrule(), ''])
    text.extend(self.contents)
    return fmt(text)
def assemble(self):
    text = []
    if self.includes:
        text.extend(self.includes)
        text.extend([hrule(), ])
    text.extend(self.contents)
    return fmt(text)