code: public static ETAPrinter init(long totalElementsToProcess, OutputStream stream, boolean closeStream) {
          return init(null, totalElementsToProcess, stream, closeStream);
      }
docs: Initializes a progress bar.
  
  @param totalElementsToProcess the total number of items that are going to be processed.
  @param stream                 the {@link java.io.OutputStream} where the progress bar will be printed
  @param closeStream            true if the stream has to be closed at the end of the process
  
  @return the initialized {@link com.vdurmont.etaprinter.ETAPrinter}