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

  public abstract void setEncoding(java.lang.String);
    descriptor: (Ljava/lang/String;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Exceptions:
      throws org.w3c.dom.DOMException
    MethodParameters:
          Name  Flags
      encoding  
}
SourceFile: "CSSCharsetRule.java"