Squashed commit of the following:

commit 16e1f81
Author: Boshi Lian <farmer1992@gmail.com>
Date:   Tue Dec 8 22:42:57 2020 -0800

    temp disable some version converter

commit 7d1a651
Author: Boshi Lian <farmer1992@gmail.com>
Date:   Tue Dec 8 20:55:44 2020 -0800

    add missing watcher generator files

commit 3f3199a
Author: Boshi Lian <farmer1992@gmail.com>
Date:   Tue Dec 8 22:14:47 2020 +0000

    gen v1.20.0

Author: tg123

csharp.settings

@@ -1,3 +1,3 @@
-export KUBERNETES_BRANCH=v1.19.3
+export KUBERNETES_BRANCH=v1.20.0
 export CLIENT_VERSION=0.0.1
 export PACKAGE_NAME=k8s

src/KubernetesClient/Versioning/VersionConverter.cs

@@ -137,9 +137,19 @@ private static void ManualConfigurations(IMapperConfigurationExpression cfg)
             cfg.CreateMap<V1Subject, Rbacv1alpha1Subject>()
                 .ForMember(dest => dest.ApiVersion, opt => opt.Ignore())
                 .ReverseMap();
-            cfg.CreateMap<V1beta1Subject, Rbacv1alpha1Subject>()
+            cfg.CreateMap<Rbacv1beta1Subject, Rbacv1alpha1Subject>()
                 .ForMember(dest => dest.ApiVersion, opt => opt.Ignore())
                 .ReverseMap();
+            cfg.CreateMap<V1alpha1RuntimeClass, V1RuntimeClass>()
+                .ForMember(dest => dest.Handler, opt => opt.MapFrom(src => src.Spec.RuntimeHandler))
+                .ForMember(dest => dest.Overhead, opt => opt.MapFrom(src => src.Spec.Overhead))
+                .ForMember(dest => dest.Scheduling, opt => opt.MapFrom(src => src.Spec.Scheduling))
+                .ReverseMap();
+            cfg.CreateMap<V1beta1RuntimeClass, V1RuntimeClass>()
+                .ForMember(dest => dest.Handler, opt => opt.MapFrom(src => src.Handler))
+                .ForMember(dest => dest.Overhead, opt => opt.MapFrom(src => src.Overhead))
+                .ForMember(dest => dest.Scheduling, opt => opt.MapFrom(src => src.Scheduling))
+                .ReverseMap();
             cfg.CreateMap<V1alpha1RuntimeClass, V1beta1RuntimeClass>()
                 .ForMember(dest => dest.Handler, opt => opt.MapFrom(src => src.Spec.RuntimeHandler))
                 .ForMember(dest => dest.Overhead, opt => opt.MapFrom(src => src.Spec.Overhead))
@@ -405,6 +415,16 @@ private static void ManualConfigurations(IMapperConfigurationExpression cfg)
                 .ForMember(dest => dest.Regarding, opt => opt.MapFrom(src => src.InvolvedObject))
                 .ForMember(dest => dest.ReportingController, opt => opt.MapFrom(src => src.ReportingComponent))
                 .ReverseMap();
+
+            cfg.CreateMap<V2beta2ContainerResourceMetricSource, V2beta1ContainerResourceMetricSource>()
+                .ForMember(dest => dest.TargetAverageValue, opt => opt.MapFrom(src => src.Target.AverageValue))
+                .ForMember(dest => dest.TargetAverageUtilization, opt => opt.MapFrom(src => src.Target.AverageUtilization))
+                .ReverseMap();
+
+            cfg.CreateMap<V2beta2ContainerResourceMetricStatus, V2beta1ContainerResourceMetricStatus>()
+                .ForMember(dest => dest.CurrentAverageValue, opt => opt.MapFrom(src => src.Current.AverageValue))
+                .ForMember(dest => dest.CurrentAverageUtilization, opt => opt.MapFrom(src => src.Current.AverageUtilization))
+                .ReverseMap();
         }
     }
 }