`TCustomHTTPDataContentProducer`
pt		StartBatch
pt		NextBatchItem
pt		EndBatch
pt		GetDataContentType
pt		DatasetToStream
pt		CreateAdaptor
pt		DoGetContent
pt		DoHandleRequest
pt		DoUpdateRecord
pt		DoInsertRecord
pt		DoDeleteRecord
pt		DoReadRecords
pt		DoExceptionToStream
pt		Notification
		Create

`THTTPContentProducer`
pt		DoHandleRequest
pt		DoGetContent
pt		ProduceContent
pt		SetRequest
		HandleRequest
		GetContent
		HaveContent
		ContentToStream