`THPackDecoder`
pt		Reset
pt		GetHeaderField
pt		SetDynamicTableSize
pt		ReadName
pt		ReadStringLiteral
pt		AddHeader
pt		InsertHeader
pt		DecodeULE128
pt		IndexHeader
pt		ExceedsMaxHeaderSize
pt		DoAddHeader
		Create
		Destroy
		Decode
		GetMaxHeaderTableSize
		SetMaxHeaderTableSize
		EndHeaderBlockTruncated