https://openjdk.java.net/ 
public interface org.w3c.dom.css.CSSStyleSheet extends org.w3c.dom.stylesheets.StyleSheet
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: org.w3c.dom.css.CSSStyleSheet
  super_class: java.lang.Object
{
  public abstract org.w3c.dom.css.CSSRule getOwnerRule();
    descriptor: ()Lorg/w3c/dom/css/CSSRule;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT

  public abstract org.w3c.dom.css.CSSRuleList getCssRules();
    descriptor: ()Lorg/w3c/dom/css/CSSRuleList;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT

  public abstract int insertRule(java.lang.String, int);
    descriptor: (Ljava/lang/String;I)I
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Exceptions:
      throws org.w3c.dom.DOMException
    MethodParameters:
       Name  Flags
      rule   
      index  

  public abstract void deleteRule(int);
    descriptor: (I)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Exceptions:
      throws org.w3c.dom.DOMException
    MethodParameters:
       Name  Flags
      index  
}
SourceFile: "CSSStyleSheet.java"