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// Before:
jio.putAttachment({
  "id": "docid/attmtid",
  "data": "abc",
  "mimetype": "text/plain",
  "rev": "xxxx"
});

// Now:
jio.putAttachment({
  "_id": "docid/attmtid",
  "_data": "abc",
  "_mimetype": "text/plain",
  "_rev": "xxxxx"
});