SilcMime silc_mime_assemble(SilcMimeAssembler assembler,
                                SilcMime partial);

    Processes and attempts to assemble the received MIME fragment `partial'.
    To check if a received MIME message is a fragment use the
    silc_mime_is_partial function.  Returns NULL if all fragments has not
    yet been received, or the newly allocated completed MIME message if
    all fragments were received.  The caller must free the returned
    SilcMime context.  The caller must not free the `partial'.

    // Assemble received MIME fragment
    mime = silc_mime_decode(data, data_len);
    if (silc_mime_is_partial(mime) == TRUE) {
      complete = silc_mime_assmeble(assembler, mime);
      if (complete == NULL)
        return;
      ...
    }