code: @NotNull
      public final String toDebugString() {
          return new ToStringBuilder(this)
                  .append("fromEventNumber", fromEventNumber)
                  .append("nextEventNumber", nextEventNumber)
                  .append("endOfStream", endOfStream)
                  .append("events", events).toString();
      }
docs: Returns a debug string representation with all data.
  
  @return Includes list content.