PsiJetFileStubImpl[package=]
  PACKAGE_DIRECTIVE
  IMPORT_LIST
  CLASS[classId=/Foo, fqName=Foo, isClsStubCompiledToJvmDefaultImplementation=false, isEnumEntry=false, isInterface=false, isLocal=false, isTopLevel=true, name=Foo, superNames=[]]
    MODIFIER_LIST[enum]
    CLASS_BODY
      ENUM_ENTRY[classId=null, fqName=Foo.in, isClsStubCompiledToJvmDefaultImplementation=false, isEnumEntry=true, isInterface=false, isLocal=false, isTopLevel=false, name=in, superNames=[]]
