Returns a set of RangeReadings for a number of detected objects. If the sensor is only capable of returning
a single reading, or if only one object was detected, it will only contain one RangeReading in the set.
RangeReadings object containing a set of RangeReading objects.
The time-stamp is the recorded system time when the range reading was taken. This is generally
recorded in the constructor of the Feature implementation. The time-stamp can help
identify the vector of the detected object.
The system time (in milliseconds) when the reading was taken.