JSObjectionUtils.h

typedef struct JSObjectionPropertyInfo {
    __unsafe_unretained id value;
    JSObjectionType type;
} JSObjectionPropertyInfo;

@protocol JSObjectionPropertyReflector <NSObject>
- (JSObjectionPropertyInfo)propertyForClass:(Class)theClass andProperty:(NSString *)propertyName;
@end

ruby_property_reflector.rb

class RubyPropertyReflector < JSObjectionPropertyReflector
  def propertyForClass(klass, andProperty: property)
    dependency_type = klass.send(:objectionTypeMappings)[property]
    unless dependency_type.is_a? Class
      dependency_type = dependency_type.objection_constantize
    end
    property_info = JSObjectionPropertyInfo.new
    property_info.value = dependency_type
    property_info.type = JSObjectionTypeClass
    property_info
  end
end