getId
public java.lang.String getId()
Returns the ID/Address of this data set. The ID is usually an OBIS code of the format A-B:C.D.E*F or on older
EDIS code of the format C.D.E.that specifies exactly what the value of this data set represents. C is the type of
the measured quantity (e.g 1 = positive active power), D describes the measurement mode and E is the tariff (e.g.
0 for total or 1 for tariff 1 only) associated with this value.
- Returns:
- the ID. If this data set contains no id this function returns the empty string.