def comments_list(self,response):
        """This method parses the given response and returns list of comments.

        Args:
            response(dict): Response containing json object for comments list.

        Returns:
            instance: Comments list object.

        """ 
        comments = CommentList()
        for value in response['comments']:
            comment = Comment()
            comment.set_comment_id(value['comment_id'])
            comment.set_invoice_id(value['invoice_id'])
            comment.set_description(value['description'])
            comment.set_commented_by_id(value['commented_by_id'])
            comment.set_commented_by(value['commented_by'])
            comment.set_comment_type(value['comment_type'])
            comment.set_operation_type(value['operation_type'])
            comment.set_date(value['date'])
            comment.set_date_description(value['date_description'])
            comment.set_time(value['time'])
            comment.set_transaction_id(value['transaction_id'])
            comment.set_transaction_type(value['transaction_type'])
            comments.set_comments(comment)
        return comments
    def comments_list(self, response):
        """This method parses the given response and returns list of comments.

        Args:
            response(dict): Response containing json object for comments list.

        Returns:
            instance: Comments list object.

        """
        comments = CommentList()
        for value in response['comments']:
            comment = Comment()
            comment.set_comment_id(value['comment_id'])
            comment.set_invoice_id(value['invoice_id'])
            comment.set_description(value['description'])
            comment.set_commented_by_id(value['commented_by_id'])
            comment.set_commented_by(value['commented_by'])
            comment.set_comment_type(value['comment_type'])
            comment.set_operation_type(value['operation_type'])
            comment.set_date(value['date'])
            comment.set_date_description(value['date_description'])
            comment.set_time(value['time'])
            comment.set_transaction_id(value['transaction_id'])
            comment.set_transaction_type(value['transaction_type'])
            comments.set_comments(comment)
        return comments
    def get_comment(self,response):
        """This method parses the given response and returns comments object.

        Args:
            response(dict): Response containing json object for comments.

        Returns:
            instance: Comments object.

        """
        comment = response['comment']
        comment_obj = Comment()
        comment_obj.set_comment_id(comment['comment_id'])
        comment_obj.set_invoice_id(comment['invoice_id'])
        comment_obj.set_description(comment['description'])
        comment_obj.set_commented_by_id(comment['commented_by_id'])
        comment_obj.set_commented_by(comment['commented_by'])
        comment_obj.set_date(comment['date'])
        comment_obj.set_date_description(comment['date_description'])
        comment_obj.set_time(comment['time'])
        comment_obj.set_comment_type(comment['comment_type'])
        return comment_obj 
    def get_comment(self, response):
        """This method parses the given response and returns comments object.

        Args:
            response(dict): Response containing json object for comments.

        Returns:
            instance: Comments object.

        """
        comment = response['comment']
        comment_obj = Comment()
        comment_obj.set_comment_id(comment['comment_id'])
        comment_obj.set_invoice_id(comment['invoice_id'])
        comment_obj.set_description(comment['description'])
        comment_obj.set_commented_by_id(comment['commented_by_id'])
        comment_obj.set_commented_by(comment['commented_by'])
        comment_obj.set_date(comment['date'])
        comment_obj.set_date_description(comment['date_description'])
        comment_obj.set_time(comment['time'])
        comment_obj.set_comment_type(comment['comment_type'])
        return comment_obj