This method returns:
{"01/01/07"}: timestamp as 1 element array {"01/01/07","01/12/07"}: timespan as 2 element array {null,"01/12/07"}: open ended (start) timespan as 2 element array {"01/12/07",null}: open ended (end) timespan as 2 element array {}: no timestamp information as empty array | |
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