Add handling so that an unboxed getter is used as is if JsonUnbox is specified.

Author: k163377

src/main/kotlin/io/github/projectmapk/jackson/module/kogera/annotation_introspector/KotlinFallbackAnnotationIntrospector.kt

@@ -12,6 +12,7 @@ import com.fasterxml.jackson.databind.util.Converter
 import io.github.projectmapk.jackson.module.kogera.KotlinDuration
 import io.github.projectmapk.jackson.module.kogera.ReflectionCache
 import io.github.projectmapk.jackson.module.kogera.ValueClassUnboxConverter
+import io.github.projectmapk.jackson.module.kogera.annotation.JsonUnbox
 import io.github.projectmapk.jackson.module.kogera.deser.CollectionValueStrictNullChecksConverter
 import io.github.projectmapk.jackson.module.kogera.deser.MapValueStrictNullChecksConverter
 import io.github.projectmapk.jackson.module.kogera.isNullable
@@ -83,7 +84,12 @@ internal class KotlinFallbackAnnotationIntrospector(
                     KotlinDurationValueToJavaDurationConverter
                 }
             } else {
-                cache.getValueClassBoxConverter(a.rawReturnType, it)
+                // If JsonUnbox is specified, the unboxed getter is used as is.
+                if (a.hasAnnotation(JsonUnbox::class.java) || it.getAnnotation(JsonUnbox::class.java) != null) {
+                    null
+                } else {
+                    cache.getValueClassBoxConverter(a.rawReturnType, it)
+                }
             }
         }
         is AnnotatedClass -> lookupKotlinTypeConverter(a)