https://openjdk.java.net/ 
class com.sun.tools.internal.xjc.reader.relaxng.NameCalculator extends com.sun.xml.internal.rngom.digested.DPatternWalker
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: com.sun.tools.internal.xjc.reader.relaxng.NameCalculator
  super_class: com.sun.xml.internal.rngom.digested.DPatternWalker
{
  void <init>();
    descriptor: ()V
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.sun.tools.internal.xjc.reader.relaxng.NameCalculator this
         0: .line 34
            aload 0 /* this */
            invokespecial com.sun.xml.internal.rngom.digested.DPatternWalker.<init>:()V
            return
        end local 0 // com.sun.tools.internal.xjc.reader.relaxng.NameCalculator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/sun/tools/internal/xjc/reader/relaxng/NameCalculator;
}
SourceFile: "NameCalculator.java"