RestKit 0.20 - Dynamic display of nested objects

I am working on an Objective-C project that uses the RestKit framework to parse JSON responses. Now I need help with object mapping settings for the following case: JSON response:

    {
   "data": {
       "SOME.API.Auth": {
           "maxVersion": 2,
           "minVersion": 1,
           "path": "auth.cgi"
       },
       "SOME.Station": {
           "maxVersion": 1,
           "minVersion": 1,
           "path": "Station/task.cgi"
       }
   },
   "success": true
}

and the following objects:

@interface Response : NSObject
@property (strong, nonatomic) NSArray *data;
@property (assign, nonatomic) BOOL success;
@end


@interface SomeAPIInfo : NSObject
@property (strong, nonatomic) NSString *name;
@property (strong, nonatomic) NSString *path;
@property (strong, nonatomic) NSString *minVersion;
@property (strong, nonatomic) NSString *maxVersion;
@end

And here are my display settings:

RKObjectMapping *responseMapping = [RKObjectMapping mappingForClass:[Response class]];
[responseMapping addAttributeMappingsFromDictionary:@{@"success": @"success"}];

RKObjectMapping *dataObjectMapping =  [RKObjectMapping mappingForClass:[SomeAPIInfo class]];
dataObjectMapping.forceCollectionMapping = YES;
[dataObjectMapping addAttributeMappingFromKeyOfRepresentationToAttribute:@"name"];
[dataObjectMapping addAttributeMappingsFromDictionary:@{
@"(name).path": @"path",
@"(name).minVersion": @"minVersion",
@"(name).maxVersion": @"maxVersion"}];


[responseMapping addPropertyMapping:[RKRelationshipMapping relationshipMappingFromKeyPath:@"data"
                                                                               toKeyPath:@"data"
                                                                             withMapping:dataObjectMapping]];

RKResponseDescriptor *responseDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:responseMapping
                                                                                  pathPattern:nil
                                                                                      keyPath:nil
                                                                                  statusCodes:RKStatusCodeIndexSetForClass(RKStatusCodeClassSuccessful)];


[_objectManager addResponseDescriptor:responseDescriptor];

The problem is that the "data" object is not displayed correctly: NSArray * data; populated with "SomeAPIInfo" objects. the name is correctly populated, but other values ​​(path, maxVersion, minVersion) are empty.

What am I doing wrong? Is there any other way to display a “data” object? Perhaps directly in the NSDictionary, so "Some.API.Auth" will be the key, and "SomeAPIInfo" will be the object (without the "name" property).

Thanks for the help!

: , - ( "SOME.API.Auth" ).

RKMappingOperation.m:
- (NSArray *)simpleAttributeMappings
{
    NSMutableArray *mappings = [NSMutableArray array];
    for (RKAttributeMapping *mapping in self.nestedAttributeMappings) {
        if ([mapping.sourceKeyPath rangeOfString:@"."].location == NSNotFound) {
            [mappings addObject:mapping];
        }
    }