def rank_member_across(<EOL>self, leaderboards, member, score, member_data=None):
for leaderboard_name in leaderboards:<EOL><INDENT>self.rank_member_in(leaderboard, member, score, member_data)<EOL><DEDENT>
Rank a member across multiple leaderboards.

@param leaderboards [Array] Leaderboard names.
@param member [String] Member name.
@param score [float] Member score.
@param member_data [String] Optional member data.