code: function collectConflicts(metadata) {
    var win = winningRev(metadata);
    var leaves = collectLeaves(metadata.rev_tree);
    var conflicts = [];
    for (var i = 0, len = leaves.length; i < len; i++) {
      var leaf = leaves[i];
      if (leaf.rev !== win && !leaf.opts.deleted) {
        conflicts.push(leaf.rev);
      }
    }
    return conflicts;
  }
docs: returns revs of all conflicts that is leaves such that 1. are not deleted and 2. are different than winning revision