.generate-z-index(@n, @i: 1) when (@i =< @n) {
  & .@{prefix}-avatar__wrapper:nth-child(@{i}) {
    z-index: calc(var(--td-avatar-group-init-z-index, @avatar-group-init-zIndex) - @i);
  }

  .generate-z-index(@n, (@i + 1));
}