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"

sign extended to implicit infinite precision; otherwise it is zero extended.
It is then truncated to fit in the result type's size.
For example, if <code>v := uint16(0x10F0)</code>, then <code>uint32(int8(v)) == 0xFFFFFFF0</code>.
The conversion always yields a valid value; there is no indication of overflow.
</li>
<li>