def total_pages_in(self, leaderboard_name, page_size=None):
if page_size is None:<EOL><INDENT>page_size = self.page_size<EOL><DEDENT>return int(<EOL>math.ceil(<EOL>self.total_members_in(leaderboard_name) /<EOL>float(page_size)))<EOL>
Retrieve the total number of pages in the named leaderboard.

@param leaderboard_name [String] Name of the leaderboard.
@param page_size [int, nil] Page size to be used when calculating the total number of pages.
@return the total number of pages in the named leaderboard.