private static boolean isSupportedComplexField(ImmutableSDField field) {
        return (ComplexAttributeFieldUtils.isSupportedComplexField(field) ||
                GeoPos.isAnyPos(field));
    }
Validates that complex fields (of type struct or map) that have struct field attributes are supported.

Only applies for indexed search clusters.

@author geirst
config-model/src/main/java/com/yahoo/vespa/model/application/validation/ComplexFieldsWithStructFieldAttributesValidator.java