https://tomcat.apache.org/: Common code shared by Catalina and Jasper for scanning JARS and processing XML descriptors 
public interface org.apache.tomcat.util.digester.DocumentProperties$Charset
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: org.apache.tomcat.util.digester.DocumentProperties$Charset
  super_class: java.lang.Object
{
  public abstract void setCharset(java.nio.charset.Charset);
    descriptor: (Ljava/nio/charset/Charset;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
         Name  Flags
      charset  
}
SourceFile: "DocumentProperties.java"
NestHost: org.apache.tomcat.util.digester.DocumentProperties
InnerClasses:
  public abstract Charset = org.apache.tomcat.util.digester.DocumentProperties$Charset of org.apache.tomcat.util.digester.DocumentProperties