docs: def rank_member_if(
              self, rank_conditional, member, score, member_data=None):
          '''
          Rank a member in the leaderboard based on execution of the +rank_conditional+.
  
          The +rank_conditional+ is passed the following parameters:
            member: Member name.
            current_score: Current score for the member in the leaderboard.
            score: Member score.
            member_data: Optional member data.
            leaderboard_options: Leaderboard options, e.g. 'reverse': Value of reverse option
  
          @param rank_conditional [function] Function which must return +True+ or +False+ that controls whether or not the member is ranked in the leaderboard.
          @param member [String] Member name.
          @param score [float] Member score.
          @param member_data [String] Optional member_data.
          '''
          self.rank_member_if_in(
              self.leaderboard_name,
              rank_conditional,
              member,
              score,
              member_data)