https://www.graalvm.org/ 
public final class com.oracle.truffle.api.test.polyglot.HostAccessTest$SingleMethod
  minor version: 0
  major version: 59
  flags: flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
  this_class: com.oracle.truffle.api.test.polyglot.HostAccessTest$SingleMethod
  super_class: java.lang.Object
{
  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.oracle.truffle.api.test.polyglot.HostAccessTest$SingleMethod this
         0: .line 491
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // com.oracle.truffle.api.test.polyglot.HostAccessTest$SingleMethod this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/oracle/truffle/api/test/polyglot/HostAccessTest$SingleMethod;

  public com.oracle.truffle.api.test.polyglot.HostAccessTest$TargetClass1 m(com.oracle.truffle.api.test.polyglot.HostAccessTest$TargetClass1);
    descriptor: (Lcom/oracle/truffle/api/test/polyglot/HostAccessTest$TargetClass1;)Lcom/oracle/truffle/api/test/polyglot/HostAccessTest$TargetClass1;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=2, args_size=2
        start local 0 // com.oracle.truffle.api.test.polyglot.HostAccessTest$SingleMethod this
        start local 1 // com.oracle.truffle.api.test.polyglot.HostAccessTest$TargetClass1 arg0
         0: .line 494
            aload 1 /* arg0 */
            areturn
        end local 1 // com.oracle.truffle.api.test.polyglot.HostAccessTest$TargetClass1 arg0
        end local 0 // com.oracle.truffle.api.test.polyglot.HostAccessTest$SingleMethod this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/oracle/truffle/api/test/polyglot/HostAccessTest$SingleMethod;
            0    1     1  arg0  Lcom/oracle/truffle/api/test/polyglot/HostAccessTest$TargetClass1;
    RuntimeVisibleAnnotations: 
      org.graalvm.polyglot.HostAccess$Export()
    MethodParameters:
      Name  Flags
      arg0  
}
SourceFile: "HostAccessTest.java"
NestHost: com.oracle.truffle.api.test.polyglot.HostAccessTest
InnerClasses:
  public final SingleMethod = com.oracle.truffle.api.test.polyglot.HostAccessTest$SingleMethod of com.oracle.truffle.api.test.polyglot.HostAccessTest
  public final TargetClass1 = com.oracle.truffle.api.test.polyglot.HostAccessTest$TargetClass1 of com.oracle.truffle.api.test.polyglot.HostAccessTest
  public abstract Export = org.graalvm.polyglot.HostAccess$Export of org.graalvm.polyglot.HostAccess