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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def to_array(self):
 """ Serializes this InlineQueryResultArticle to a dictionary. :return: dictionary representation of this object. :rtype: dict """

        array = super(InlineQueryResultArticle, self).to_array()
        # 'type' and 'id' given by superclass
        array['title'] = u(self.title)  # py2: type unicode, py3: type str
        array['input_message_content'] = self.input_message_content.to_array()  # type InputMessageContent
        if self.reply_markup is not None:
            array['reply_markup'] = self.reply_markup.to_array()  # type InlineKeyboardMarkup
        if self.url is not None:
            array['url'] = u(self.url)  # py2: type unicode, py3: type str
        if self.hide_url is not None:
            array['hide_url'] = bool(self.hide_url)  # type bool
        if self.description is not None:
            array['description'] = u(self.description)  # py2: type unicode, py3: type str
        if self.thumb_url is not None:
            array['thumb_url'] = u(self.thumb_url)  # py2: type unicode, py3: type str
        if self.thumb_width is not None:
            array['thumb_width'] = int(self.thumb_width)  # type int
        if self.thumb_height is not None:
            array['thumb_height'] = int(self.thumb_height)  # type int
        return array