[BUG] MapsSearchClient.getReverseGeocoding() always returns null for MapsSearchAddressCountryRegion.getIso()

[lschuer]

Describe the bug
When requesting an address via the method getReverseGeocoding of the MapsSearchClient, the iso value of the country region is always null.

The reason seems to be a wrong field matcher in the MapsSearchAddressCountryRegion.fromJson() method. The response field is named "iso" but the matcher checks for "ISO".

To Reproduce
Steps to reproduce the behavior: (Kotlin)

val result = mapSearchClient.getReverseGeocoding(
    GeoPosition(-122.138681, 47.630358),
    listOf(ReverseGeocodingResultTypeEnum.ADDRESS, ReverseGeocodingResultTypeEnum.COUNTRY_REGION),
    "Auto"
)

val iso = result.features.firstOrNull()?.properties?.address?.countryRegion?.iso

Expected behavior
I'd expect the value to be filled by the iso code.

Screenshots

Debugged fromJson mapping function of MapsSearchAddressCountryRegion:

Query result:

Setup (please complete the following information):

• OS: Ubuntu 22.04
• IDE: IntelliJ
• Library/Libraries: com.azure:azure-maps-search:2.0.0-beta.2
• Java version: 17
• App Server/Environment: Tomcat
• Frameworks: Spring Boot