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**Supported function named parameters**

`boost`
:   (float) Floating point number used to decrease or increase the relevance scores of the query. Defaults to 1.0.

`time_zone`
:   (keyword) UTC offset or IANA time zone used to interpret date literals in the query string.

`case_insensitive`
:   (boolean) If true, performs case-insensitive matching for keyword fields. Defaults to false.

`default_field`
:   (keyword) Default field to search if no field is provided in the query string. Supports wildcards (*).

