toJSONString()

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  { "firstName": "Elliotte", "lastName":"Harold", "email": "elharo@macfaq.com" }
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  { "firstName": "Isaac", "lastName": "Asimov", "genre": "science fiction" },
  { "firstName": "Tad", "lastName": "Williams", "genre": "fantasy" },
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  { "firstName": "Eric", "lastName": "Clapton", "instrument": "guitar" },
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