attributesToHighlight

'attributesToHighlight' => [
  'attribute',
  '*', // returns all attributes in the index not just searchable attributes
  ...
]

attributesToHighlight: [
  'attribute',
  '*', # returns all attributes in the index not just searchable attributes
  ...
]

attributesToHighlight: [
  'attribute',
  '*', // returns all attributes in the index not just searchable attributes
  ...
]

'attributesToHighlight': [
  'attribute',
  '*', # returns all attributes in the index not just searchable attributes
  ...
]

"attributesToHighlight": [
  "attribute",
  "*" // returns all attributes in the index not just searchable attributes
]

attributesToHighlight {
    +"attribute"
    +"*" // returns all attributes in the index not just searchable attributes
}

new JSONObject()
  .put(
    "attributesToHighlight",
    new JSONArray()
      .put("attribute")
      .put("*") // returns all attributes in the index not just searchable attributes
  )

IndexSettings settings = new IndexSettings()
settings.AttributesToHighlight = new List<string>
{
    "attribute",
    "*" // returns all attributes in the index not just searchable attributes
};
  ...

.setAttributesToHighlight(Arrays.asList(
  "attribute",
  "*" // returns all attributes in the index not just searchable attributes
))

opt.AttributesToHighlight(
  "attribute",
  "*", // returns all attributes in the index not just searchable attributes
)

attributesToHighlight = Some(Seq(
  "attribute",
  "*" // returns all attributes in the index not just searchable attributes
))

Can be used in these methods:
search, setSettings, searchForFacetValues, generateSecuredApiKey, addApiKey, updateApiKey search, set_settings, search_for_facet_values, generate_secured_api_key, add_api_key, update_api_key search, setSettings, searchForFacetValues, generateSecuredApiKey, addApiKey, updateApiKey search, set_settings, search_for_facet_values, generate_secured_api_key, add_api_key, update_api_key search, setSettings, searchForFacetValues search, setSettings, searchForFacetValues, generateSecuredApiKey, addApiKey, updateApiKey searchAsync, setSettingsAsync, searchForFacetValues Search, SetSettings, SearchForFacetValues, GenerateSecuredApiKey, AddApiKey, UpdateApiKey Search, setSettings, searchForFacetValues, generateSecuredApiKey, addApiKey, updateApiKey Search, SetSettings, SearchForFacetValues, GenerateSecuredAPIKey, AddAPIKey, UpdateAPIKey search, setSettings, search into facet values, generateSecuredApiKey, add key, update key