https://www.graalvm.org/ 
public abstract class com.oracle.truffle.api.library.test.GenerateLibraryTest$ExportsGenericInterfaceLibrary extends com.oracle.truffle.api.library.Library
  minor version: 0
  major version: 59
  flags: flags: (0x0421) ACC_PUBLIC, ACC_SUPER, ACC_ABSTRACT
  this_class: com.oracle.truffle.api.library.test.GenerateLibraryTest$ExportsGenericInterfaceLibrary
  super_class: com.oracle.truffle.api.library.Library
{
  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.oracle.truffle.api.library.test.GenerateLibraryTest$ExportsGenericInterfaceLibrary this
         0: .line 385
            aload 0 /* this */
            invokespecial com.oracle.truffle.api.library.Library.<init>:()V
            return
        end local 0 // com.oracle.truffle.api.library.test.GenerateLibraryTest$ExportsGenericInterfaceLibrary this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/oracle/truffle/api/library/test/GenerateLibraryTest$ExportsGenericInterfaceLibrary;

  public abstract void foo(com.oracle.truffle.api.library.test.GenerateLibraryTest$ExportsGenericInterface<?>);
    descriptor: (Lcom/oracle/truffle/api/library/test/GenerateLibraryTest$ExportsGenericInterface;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Signature: (Lcom/oracle/truffle/api/library/test/GenerateLibraryTest$ExportsGenericInterface<*>;)V
    MethodParameters:
          Name  Flags
      receiver  
}
SourceFile: "GenerateLibraryTest.java"
NestHost: com.oracle.truffle.api.library.test.GenerateLibraryTest
InnerClasses:
  public abstract DefaultExport = com.oracle.truffle.api.library.GenerateLibrary$DefaultExport of com.oracle.truffle.api.library.GenerateLibrary
  abstract ExportsGenericInterface = com.oracle.truffle.api.library.test.GenerateLibraryTest$ExportsGenericInterface of com.oracle.truffle.api.library.test.GenerateLibraryTest
  public abstract ExportsGenericInterfaceLibrary = com.oracle.truffle.api.library.test.GenerateLibraryTest$ExportsGenericInterfaceLibrary of com.oracle.truffle.api.library.test.GenerateLibraryTest
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.library.GenerateLibrary()
    RuntimeInvisibleAnnotations: 
      com.oracle.truffle.api.library.GenerateLibrary$DefaultExport(value = Lcom/oracle/truffle/api/library/test/GenerateLibraryTest$ExportsGenericInterfaceDefaultLibrary;)