anchor.diff:  .LsIncludeProcessor.java
   [source,java,indent=0]
   ----
  -
   import org.asciidoctor.ast.Document;
   import org.asciidoctor.extension.IncludeProcessor;
   import org.asciidoctor.extension.PreprocessorReader;
  
positive.code: --
  RP: This is a comment and should only appear in draft documents
  --
  
  ----
  
  The implementation of the preprocessor simply gets the AST node for the document to be created as well as a `PreprocessorReader`.
  
negative.code: ----
  [yell]
  I really mean it
  ----
  
  After the processing this block will look like this
  