Generates the table header.

def _print_head(self):
        """Generates the table header."""
        self._print_divide()
        self.StrTable += "| "
        for colwidth, attr in zip(self.AttributesLength, self.Attributes):
            self.StrTable += self._pad_string(attr, colwidth * 2)
            self.StrTable += "| "
        self.StrTable += '\n'
        self._print_divide()