http://nexus.sonatype.org/oss-repository-hosting.html/vertx-parent/vertx-ext/vertx-ext-parent/vertx-junit5: Sonatype helps open source projects to set up Maven repositories on https://oss.sonatype.org/ (Eclipse) 
class examples.Examples$ETest
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: examples.Examples$ETest
  super_class: java.lang.Object
{
  final examples.Examples this$0;
    descriptor: Lexamples/Examples;
    flags: (0x1010) ACC_FINAL, ACC_SYNTHETIC

  void <init>(examples.Examples);
    descriptor: (Lexamples/Examples;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // examples.Examples$ETest this
         0: .line 184
            aload 0 /* this */
            aload 1
            putfield examples.Examples$ETest.this$0:Lexamples/Examples;
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // examples.Examples$ETest this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lexamples/Examples$ETest;
    MethodParameters:
        Name  Flags
      this$0  final

  static examples.Examples access$0(examples.Examples$ETest);
    descriptor: (Lexamples/Examples$ETest;)Lexamples/Examples;
    flags: (0x1008) ACC_STATIC, ACC_SYNTHETIC
    Code:
      stack=1, locals=1, args_size=1
         0: .line 184
            aload 0
            getfield examples.Examples$ETest.this$0:Lexamples/Examples;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
SourceFile: "Examples.java"
NestHost: examples.Examples
InnerClasses:
  ETest = examples.Examples$ETest of examples.Examples
  SomeTest = examples.Examples$ETest$SomeTest of examples.Examples$ETest