code: public DbxDownloadStyleBuilder<R> range(long start) {
          if (start < 0) throw new IllegalArgumentException("start must be non-negative");
  
          this.start = start;
          this.length = null;
  
          return this;
      }
docs: Sets the partial byte range to download.
  
  Only bytes from {@code start} (inclusive) until the end of the content will be
  downloaded. The HTTP Range header will be set for this request. If {@code start} is greater
  than the length of the content, the range request will be ignored and server will return the
  entire contents.
  
  @param start index of first byte in range (index starts at 0). All following bytes in the
  content will be downloaded.
  
  @return this builder
  
  @throws IllegalArgumentException if {@code start} is negative