http://findbugs.sourceforge.net/: Annotation the FindBugs tool supports 
public interface javax.annotation.MatchesPattern extends java.lang.annotation.Annotation
  minor version: 0
  major version: 59
  flags: flags: (0x2601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT, ACC_ANNOTATION
  this_class: javax.annotation.MatchesPattern
  super_class: java.lang.Object
{
  public abstract java.lang.String value();
    descriptor: ()Ljava/lang/String;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    RuntimeVisibleAnnotations: 
      javax.annotation.RegEx()
    RuntimeVisibleTypeAnnotations: 
      METHOD_RETURN
        javax.annotation.RegEx()

  public abstract int flags();
    descriptor: ()I
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    AnnotationDefault: 0
}
SourceFile: "MatchesPattern.java"
NestMembers:
  javax.annotation.MatchesPattern$Checker
InnerClasses:
  public Checker = javax.annotation.MatchesPattern$Checker of javax.annotation.MatchesPattern
    RuntimeVisibleAnnotations: 
      java.lang.annotation.Documented()
      javax.annotation.meta.TypeQualifier(applicableTo = Ljava/lang/String;)
      java.lang.annotation.Retention(value = java.lang.annotation.RetentionPolicy.RUNTIME:Ljava/lang/annotation/RetentionPolicy;)