boundary = "simple boundary",
        source = Buffer().writeUtf8(multipart),
      )

    parts.nextPart()!!
    val partMno = parts.nextPart()!!
    assertThat(partMno.body.readUtf8()).isEqualTo("mnop")

    assertThat(parts.nextPart()).isNull()
  }

  @Test fun `cannot read part after calling nextPart`() {
    val multipart =
      """
      |--simple boundary
      |
      |abcd
      |efgh

    ```kotlin
    val response: Response = call.execute()
    val multipartReader = MultipartReader(response.body!!)

    multipartReader.use {
      while (true) {
        val part = multipartReader.nextPart() ?: break
        process(part.headers, part.body)
      }
    }
    ```

 *  New: `MediaType.parameter()` gets a parameter like `boundary` from a media type like
    `multipart/mixed; boundary="abc"`.

        queue.clear();
        int nextStart = 0;
        final int end = block.length();
        boolean afterSynonymProduced = false;
        final ByteArrayDataInput bytesReader = new ByteArrayDataInput();
        for (int idx = 0; idx < synonyms.size(); idx++) {
            final MyToken synonym = synonyms.get(idx);
            tokenizePartialBlock(nextStart, synonym.startOffset, afterSynonymProduced);

       * The returned string will be from the end of the last match to the beginning of the next
       * one. nextStart is the start position of the returned substring, while offset is the place
       * to start looking for a separator.
       */
      int nextStart = offset;
      while (offset != -1) {
        int start = nextStart;
        int end;

        int separatorPosition = separatorStart(offset);

       * The returned string will be from the end of the last match to the beginning of the next
       * one. nextStart is the start position of the returned substring, while offset is the place
       * to start looking for a separator.
       */
      int nextStart = offset;
      while (offset != -1) {
        int start = nextStart;
        int end;

        int separatorPosition = separatorStart(offset);

        int len = this.length;

        if (this.next != null) {
            final int nextStart = dstIndex;
            dstIndex += this.next.encode(dst, dstIndex);
            final int off = nextStart - start;
            SMBUtil.writeInt4(off, dst, start + 20);
            len += dstIndex - nextStart;
        }

        if (this.digest != null) {

                        r.getShare(), r.getPath(), path, nextPath));
            }
            final DfsReferralData nextstart = resolve(tf, r.getServer(), r.getShare(), nextPath, depthLimit - 1);
            final DfsReferralData next = nextstart;

            if (next != null) {
                do {
                    if (log.isDebugEnabled()) {