code: public String transform(Reader reader, File inputFile, boolean validationOfInternalLinks) {
  		preProcessingTransformation(null, inputFile, validationOfInternalLinks);
  		final String rawContent = getDocumentParser().transform(reader, inputFile);
  		return postProcessingTransformation(rawContent, validationOfInternalLinks);
  	}
docs: Read the given input stream and transform its content in order to have a raw text.
  
  @param reader the input stream.
  @param inputFile the name of the input file for locating included features and formatting error messages.
  @param validationOfInternalLinks indicates if the internal links should be validated.
  @return the raw file content.