https://openjdk.java.net/ 
public interface com.sun.xml.internal.xsom.XSAttributeUse extends com.sun.xml.internal.xsom.XSComponent
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: com.sun.xml.internal.xsom.XSAttributeUse
  super_class: java.lang.Object
{
  public abstract boolean isRequired();
    descriptor: ()Z
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT

  public abstract com.sun.xml.internal.xsom.XSAttributeDecl getDecl();
    descriptor: ()Lcom/sun/xml/internal/xsom/XSAttributeDecl;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT

  public abstract com.sun.xml.internal.xsom.XmlString getDefaultValue();
    descriptor: ()Lcom/sun/xml/internal/xsom/XmlString;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT

  public abstract com.sun.xml.internal.xsom.XmlString getFixedValue();
    descriptor: ()Lcom/sun/xml/internal/xsom/XmlString;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
}
SourceFile: "XSAttributeUse.java"