code: func NewPathSlashesStripper(slashesCount int) PathRewriteFunc {
  	return func(ctx *RequestCtx) []byte {
  		return stripLeadingSlashes(ctx.Path(), slashesCount)
  	}
  }
docs: // NewPathSlashesStripper returns path rewriter, which strips slashesCount
  // leading slashes from the path.
  //
  // Examples:
  //
  //   * slashesCount = 0, original path: "/foo/bar", result: "/foo/bar"
  //   * slashesCount = 1, original path: "/foo/bar", result: "/bar"
  //   * slashesCount = 2, original path: "/foo/bar", result: ""
  //
  // The returned path rewriter may be used as FS.PathRewrite .