[
  {
    "_type": "IndexCasePreference",
    "field": "aaa"
  },
  {
    "_type": "IndexCasePreference",
    "field": "aBB"
  },
  {
    "_type": "IndexCasePreference",
    "field": "Aba"
  },
  {
    "_type": "IndexCasePreference",
    "field": "Aab"
  },
  {
    "_type": "IndexCasePreference",
    "field": "AAA"
  },
  {
    "_type": "IndexCasePreference",
    "field": "Aaa"
  },
  {
    "_type": "IndexCasePreference",
    "field": "AAa"
  },
  {
    "_type": "Index",
    "name": "casePreferenceIndex1",
    "propertyName": "field",
    "propertyType": "string",
    "locale": "en_US",
    "collation": "default",
    "casePreference": "IgnoreCase"
  },
  {
    "_type": "Index",
    "name": "casePreferenceIndex2",
    "propertyName": "field",
    "propertyType": "string",
    "locale": "en_US",
    "collation": "default",
    "casePreference": "PreferUpperCase"
  },
  {
    "_type": "Index",
    "name": "casePreferenceIndex3",
    "propertyName": "field",
    "propertyType": "string",
    "locale": "en_US",
    "collation": "default",
    "casePreference": "PreferLowerCase"
  }
]