number Format
open fun numberFormat(number: Expression<Number>, locale: Expression<String>? = null, currency: Expression<String>? = null, minFractionDigits: Expression<Number>? = null, maxFractionDigits: Expression<Number>? = null): Expression<String>
Converts the input number into a string representation using the providing formatting rules. If set, the locale argument specifies the locale to use, as a BCP 47 language tag. If set, the currency argument specifies an ISO 4217 code to use for currency-style formatting. If set, the min-fraction-digits and max-fraction-digits arguments specify the minimum and maximum number of fractional digits to include.