public Builder setAdSlotIdBytes(com.google.protobuf.ByteString value) {
      if (value == null) {
        throw new NullPointerException();
      }
      checkByteStringIsUtf8(value);
      adSlotId_ = value;
      bitField0_ |= 0x00000400;
      onChanged();
      return this;
    }
<pre>
The ID used to identify the desired placement on a publisher's page.
Values to be used should be discussed between publishers and
advertisers.
</pre>

<code>string ad_slot_id = 8;</code>

@param value The bytes for adSlotId to set.
@return This builder for chaining.
java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/Companion.java