OptionalcaseWhether or not the search index should ignore case. By default this is false.
OptionalexclusionsOptional list of field names to omit from the documents stored for each node. This means that any field in this list will not be indexed.
OptionalfieldsOptional list of fields to index. By default this is empty, meaning all fields (minus any exclusions) will
be indexed.
OptionallimitOptional limit for the number of result a search should return. Defaults to 10.
Options for the search index.