https://www.graalvm.org/ 
class com.oracle.truffle.api.library.test.GR18252Test$CMessagesNoWarn1 extends com.oracle.truffle.api.library.test.GR18252Test$AMessages
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: com.oracle.truffle.api.library.test.GR18252Test$CMessagesNoWarn1
  super_class: com.oracle.truffle.api.library.test.GR18252Test$AMessages
{
  void <init>();
    descriptor: ()V
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.oracle.truffle.api.library.test.GR18252Test$CMessagesNoWarn1 this
         0: .line 140
            aload 0 /* this */
            invokespecial com.oracle.truffle.api.library.test.GR18252Test$AMessages.<init>:()V
            return
        end local 0 // com.oracle.truffle.api.library.test.GR18252Test$CMessagesNoWarn1 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/oracle/truffle/api/library/test/GR18252Test$CMessagesNoWarn1;

  public static boolean is(com.oracle.truffle.api.library.test.GR18252Test$Data, com.oracle.truffle.api.profiles.BranchProfile, com.oracle.truffle.api.profiles.BranchProfile);
    descriptor: (Lcom/oracle/truffle/api/library/test/GR18252Test$Data;Lcom/oracle/truffle/api/profiles/BranchProfile;Lcom/oracle/truffle/api/profiles/BranchProfile;)Z
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=1, locals=3, args_size=3
        start local 0 // com.oracle.truffle.api.library.test.GR18252Test$Data receiver
        start local 1 // com.oracle.truffle.api.profiles.BranchProfile p0
        start local 2 // com.oracle.truffle.api.profiles.BranchProfile p1
         0: .line 146
            iconst_1
            ireturn
        end local 2 // com.oracle.truffle.api.profiles.BranchProfile p1
        end local 1 // com.oracle.truffle.api.profiles.BranchProfile p0
        end local 0 // com.oracle.truffle.api.library.test.GR18252Test$Data receiver
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    1     0  receiver  Lcom/oracle/truffle/api/library/test/GR18252Test$Data;
            0    1     1        p0  Lcom/oracle/truffle/api/profiles/BranchProfile;
            0    1     2        p1  Lcom/oracle/truffle/api/profiles/BranchProfile;
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.library.ExportMessage()
    RuntimeInvisibleParameterAnnotations: 
      0:
      1:
        com.oracle.truffle.api.dsl.Cached()
      2:
        com.oracle.truffle.api.dsl.Cached()
    MethodParameters:
          Name  Flags
      receiver  
      p0        
      p1        
}
SourceFile: "GR18252Test.java"
NestHost: com.oracle.truffle.api.library.test.GR18252Test
InnerClasses:
  AMessages = com.oracle.truffle.api.library.test.GR18252Test$AMessages of com.oracle.truffle.api.library.test.GR18252Test
  CMessagesNoWarn1 = com.oracle.truffle.api.library.test.GR18252Test$CMessagesNoWarn1 of com.oracle.truffle.api.library.test.GR18252Test
  Data = com.oracle.truffle.api.library.test.GR18252Test$Data of com.oracle.truffle.api.library.test.GR18252Test
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.library.ExportLibrary(value = Lcom/oracle/truffle/api/library/test/GR18252Test$ALibrary;, receiverType = Lcom/oracle/truffle/api/library/test/GR18252Test$Data;)