https://github.com/google/guice/guice: Guice is a lightweight dependency injection framework for Java 6 and above (Google, Inc.) 
interface com.google.inject.internal.RealOptionalBinder$Actual extends java.lang.annotation.Annotation
  minor version: 0
  major version: 59
  flags: flags: (0x2600) ACC_INTERFACE, ACC_ABSTRACT, ACC_ANNOTATION
  this_class: com.google.inject.internal.RealOptionalBinder$Actual
  super_class: java.lang.Object
{
  public abstract java.lang.String value();
    descriptor: ()Ljava/lang/String;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
}
SourceFile: "RealOptionalBinder.java"
NestHost: com.google.inject.internal.RealOptionalBinder
InnerClasses:
  abstract Actual = com.google.inject.internal.RealOptionalBinder$Actual of com.google.inject.internal.RealOptionalBinder
    RuntimeVisibleAnnotations: 
      java.lang.annotation.Retention(value = java.lang.annotation.RetentionPolicy.RUNTIME:Ljava/lang/annotation/RetentionPolicy;)
      javax.inject.Qualifier()