var zb0001Mask uint16 /* 10 bits */
	_ = zb0001Mask
	if z.ReplicationStats == nil {
		zb0001Len--
		zb0001Mask |= 0x80
	}
	if z.AllTierStats == nil {
		zb0001Len--
		zb0001Mask |= 0x100
	}
	// variable map header, size zb0001Len
	err = en.Append(0x80 | uint8(zb0001Len))
	if err != nil {
		return
	}
	if zb0001Len == 0 {
		return
	}
	// write "ch"

	if z.OldDataDir == "" {
		zb0001Len--
		zb0001Mask |= 0x10
	}
	// variable map header, size zb0001Len
	o = append(o, 0x80|uint8(zb0001Len))
	if zb0001Len == 0 {
		return
	}
	// string "BaseOptions"
	o = append(o, 0xab, 0x42, 0x61, 0x73, 0x65, 0x4f, 0x70, 0x74, 0x69, 0x6f, 0x6e, 0x73)
	// map header, size 0
	_ = z.BaseOptions
	o = append(o, 0x80)
	// string "r"
	o = append(o, 0xa1, 0x72)

61,1294,265,4,Queens,026500,4026500,E,QN50,Elmhurst-Maspeth,4109,1129,155,4,Queens,015500,4015500,I,QN70,Astoria,4101^3389425,1,2014-03-23 19:48:39,2014-03-23 19:52:48,N,1,-73.892524719238281,40.746841430664062,-73.907707214355469,40.74853515625,1,0.80,5,0,0.5,0,0,,,5.5,2,,83,260,green,0.00,0.0,0.0,42,27,7.38,1294,265,4,Queens,026500,4026500,E,QN50,Elmhurst-Maspeth,4109,1289,255,4,Queens,025500,4025500,I,QN63,Woodside,4109^3389426,2,2014-03-16 02:31:53,2014-03-16 02:50:43,N,1,-73.891410827636719...

    assertFailsWith<IllegalArgumentException> {
      Request.Builder().addHeader("a b", "c")
    }.also { expected ->
      assertThat(expected.message).isEqualTo("Unexpected char 0x20 at 1 in header name: a b")
    }
  }

  @Test
  fun requestHeaderNameWithTabForbidden() {
    assertFailsWith<IllegalArgumentException> {
      Request.Builder().addHeader("a\tb", "c")