`TXMLOutputStreamer`
		EndData
		EndRow
		FinalizeOutput
		StartData
		StartRow
		FieldToXML
		WriteField
		WriteMetadata
		CreateErrorContent
		Destroy
		GetContentType
		InitStreaming

`TRestOutputStreamer`
pt		SetOutputOptions
		RegisterStreamer
		UnRegisterStreamer
		RequireMetadata
		FieldToString
		FieldToBase64
		HasOption
		CreateErrorContent
		WriteMetadata
		StartData
		StartRow
		WriteField
		EndRow
		EndData
		FinalizeOutput

`TRestStreamer`
		GetContentType
		Create
		GetString
		InitStreaming
		GetVariable