https://github.com/JetBrains/java-annotations: A set of annotations used for code inspection support and code documentation. 
public interface org.jetbrains.annotations.ApiStatus$AvailableSince extends java.lang.annotation.Annotation
  minor version: 0
  major version: 59
  flags: flags: (0x2601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT, ACC_ANNOTATION
  this_class: org.jetbrains.annotations.ApiStatus$AvailableSince
  super_class: java.lang.Object
{
  public abstract java.lang.String value();
    descriptor: ()Ljava/lang/String;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
}
SourceFile: "ApiStatus.java"
NestHost: org.jetbrains.annotations.ApiStatus
InnerClasses:
  public abstract AvailableSince = org.jetbrains.annotations.ApiStatus$AvailableSince of org.jetbrains.annotations.ApiStatus
    RuntimeVisibleAnnotations: 
      java.lang.annotation.Documented()
      java.lang.annotation.Retention(value = java.lang.annotation.RetentionPolicy.CLASS:Ljava/lang/annotation/RetentionPolicy;)
      java.lang.annotation.Target(value = {java.lang.annotation.ElementType.TYPE:Ljava/lang/annotation/ElementType;, java.lang.annotation.ElementType.ANNOTATION_TYPE:Ljava/lang/annotation/ElementType;, java.lang.annotation.ElementType.METHOD:Ljava/lang/annotation/ElementType;, java.lang.annotation.ElementType.CONSTRUCTOR:Ljava/lang/annotation/ElementType;, java.lang.annotation.ElementType.FIELD:Ljava/lang/annotation/ElementType;, java.lang.annotation.ElementType.PACKAGE:Ljava/lang/annotation/ElementType;})