https://www.graalvm.org/ 
class com.oracle.svm.core.graal.amd64.SubstrateAMD64Feature$1 implements com.oracle.svm.core.graal.code.SubstrateRegisterConfigFactory
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: com.oracle.svm.core.graal.amd64.SubstrateAMD64Feature$1
  super_class: java.lang.Object
{
  final com.oracle.svm.core.graal.amd64.SubstrateAMD64Feature this$0;
    descriptor: Lcom/oracle/svm/core/graal/amd64/SubstrateAMD64Feature;
    flags: (0x1010) ACC_FINAL, ACC_SYNTHETIC

  void <init>(com.oracle.svm.core.graal.amd64.SubstrateAMD64Feature);
    descriptor: (Lcom/oracle/svm/core/graal/amd64/SubstrateAMD64Feature;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.oracle.svm.core.graal.amd64.SubstrateAMD64Feature$1 this
         0: .line 60
            aload 0 /* this */
            aload 1
            putfield com.oracle.svm.core.graal.amd64.SubstrateAMD64Feature$1.this$0:Lcom/oracle/svm/core/graal/amd64/SubstrateAMD64Feature;
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // com.oracle.svm.core.graal.amd64.SubstrateAMD64Feature$1 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/oracle/svm/core/graal/amd64/SubstrateAMD64Feature$1;
    MethodParameters:
        Name  Flags
      this$0  final

  public jdk.vm.ci.code.RegisterConfig newRegisterFactory(com.oracle.svm.core.graal.meta.SubstrateRegisterConfig$ConfigKind, jdk.vm.ci.meta.MetaAccessProvider, jdk.vm.ci.code.TargetDescription, java.lang.Boolean);
    descriptor: (Lcom/oracle/svm/core/graal/meta/SubstrateRegisterConfig$ConfigKind;Ljdk/vm/ci/meta/MetaAccessProvider;Ljdk/vm/ci/code/TargetDescription;Ljava/lang/Boolean;)Ljdk/vm/ci/code/RegisterConfig;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=6, locals=5, args_size=5
        start local 0 // com.oracle.svm.core.graal.amd64.SubstrateAMD64Feature$1 this
        start local 1 // com.oracle.svm.core.graal.meta.SubstrateRegisterConfig$ConfigKind config
        start local 2 // jdk.vm.ci.meta.MetaAccessProvider metaAccess
        start local 3 // jdk.vm.ci.code.TargetDescription target
        start local 4 // java.lang.Boolean preserveFramePointer
         0: .line 63
            new com.oracle.svm.core.graal.amd64.SubstrateAMD64RegisterConfig
            dup
            aload 1 /* config */
            aload 2 /* metaAccess */
            aload 3 /* target */
            aload 4 /* preserveFramePointer */
            invokevirtual java.lang.Boolean.booleanValue:()Z
            invokespecial com.oracle.svm.core.graal.amd64.SubstrateAMD64RegisterConfig.<init>:(Lcom/oracle/svm/core/graal/meta/SubstrateRegisterConfig$ConfigKind;Ljdk/vm/ci/meta/MetaAccessProvider;Ljdk/vm/ci/code/TargetDescription;Z)V
            areturn
        end local 4 // java.lang.Boolean preserveFramePointer
        end local 3 // jdk.vm.ci.code.TargetDescription target
        end local 2 // jdk.vm.ci.meta.MetaAccessProvider metaAccess
        end local 1 // com.oracle.svm.core.graal.meta.SubstrateRegisterConfig$ConfigKind config
        end local 0 // com.oracle.svm.core.graal.amd64.SubstrateAMD64Feature$1 this
      LocalVariableTable:
        Start  End  Slot                  Name  Signature
            0    1     0                  this  Lcom/oracle/svm/core/graal/amd64/SubstrateAMD64Feature$1;
            0    1     1                config  Lcom/oracle/svm/core/graal/meta/SubstrateRegisterConfig$ConfigKind;
            0    1     2            metaAccess  Ljdk/vm/ci/meta/MetaAccessProvider;
            0    1     3                target  Ljdk/vm/ci/code/TargetDescription;
            0    1     4  preserveFramePointer  Ljava/lang/Boolean;
    MethodParameters:
                      Name  Flags
      config                
      metaAccess            
      target                
      preserveFramePointer  
}
SourceFile: "SubstrateAMD64Feature.java"
EnclosingMethod: com.oracle.svm.core.graal.amd64.SubstrateAMD64Feature.afterRegistration:(Lorg/graalvm/nativeimage/hosted/Feature$AfterRegistrationAccess;)V
NestHost: com.oracle.svm.core.graal.amd64.SubstrateAMD64Feature
InnerClasses:
  com.oracle.svm.core.graal.amd64.SubstrateAMD64Feature$1
  public final ConfigKind = com.oracle.svm.core.graal.meta.SubstrateRegisterConfig$ConfigKind of com.oracle.svm.core.graal.meta.SubstrateRegisterConfig
  public abstract AfterRegistrationAccess = org.graalvm.nativeimage.hosted.Feature$AfterRegistrationAccess of org.graalvm.nativeimage.hosted.Feature