https://freemarker.apache.org/: FreeMarker is a "template engine"; a generic tool to generate text output based on templates. (Apache Software Foundation) 
class freemarker.core.Expression$ReplacemenetState
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: freemarker.core.Expression$ReplacemenetState
  super_class: java.lang.Object
{
  boolean replacementAlreadyInUse;
    descriptor: Z
    flags: (0x0000) 

  void <init>();
    descriptor: ()V
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // freemarker.core.Expression$ReplacemenetState this
         0: .line 192
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // freemarker.core.Expression$ReplacemenetState this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lfreemarker/core/Expression$ReplacemenetState;
}
SourceFile: "Expression.java"
NestHost: freemarker.core.Expression
InnerClasses:
  ReplacemenetState = freemarker.core.Expression$ReplacemenetState of freemarker.core.Expression