https://github.com/square/okhttp/okhttp: An HTTP+HTTP/2 client for Android and Java applications 
public interface okhttp3.internal.annotations.EverythingIsNonNull extends java.lang.annotation.Annotation
  minor version: 0
  major version: 59
  flags: flags: (0x2601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT, ACC_ANNOTATION
  this_class: okhttp3.internal.annotations.EverythingIsNonNull
  super_class: java.lang.Object
{
}
SourceFile: "EverythingIsNonNull.java"
    RuntimeVisibleAnnotations: 
      java.lang.annotation.Documented()
      java.lang.annotation.Retention(value = java.lang.annotation.RetentionPolicy.RUNTIME:Ljava/lang/annotation/RetentionPolicy;)
    RuntimeInvisibleAnnotations: 
      Nonnull()