private TimeStampedDataParser(Asn1SequenceParser parser)
		{
			this.parser = parser;
			this.version = DerInteger.GetInstance(parser.ReadObject());

			Asn1Object obj = parser.ReadObject().ToAsn1Object();

			if (obj is DerIA5String)
			{
				this.dataUri = DerIA5String.GetInstance(obj);
				obj = parser.ReadObject().ToAsn1Object();
			}

            if (//obj is MetaData ||
                obj is Asn1SequenceParser)
			{
				this.metaData = MetaData.GetInstance(obj.ToAsn1Object());
				obj = parser.ReadObject().ToAsn1Object();
			}

			if (obj is Asn1OctetStringParser)
			{
				this.content = (Asn1OctetStringParser)obj;
			}
		}
		public TimeStampedData(DerIA5String dataUri, MetaData metaData, Asn1OctetString content,
			Evidence temporalEvidence)
		{
			this.version = new DerInteger(1);
			this.dataUri = dataUri;
			this.metaData = metaData;
			this.content = content;
			this.temporalEvidence = temporalEvidence;
		}
		private TimeStampedData(Asn1Sequence seq)
		{
			this.version = DerInteger.GetInstance(seq[0]);
			
			int index = 1;
			if (seq[index] is DerIA5String)
			{
				this.dataUri = DerIA5String.GetInstance(seq[index++]);
			}
			if (seq[index] is MetaData || seq[index] is Asn1Sequence)
			{
				this.metaData = MetaData.GetInstance(seq[index++]);
			}
			if (seq[index] is Asn1OctetString)
			{
				this.content = Asn1OctetString.GetInstance(seq[index++]);
			}
			this.temporalEvidence = Evidence.GetInstance(seq[index]);
		}