public Builder clearTtl() {
      bitField0_ = (bitField0_ & ~0x00000004);
      ttl_ = null;
      if (ttlBuilder_ != null) {
        ttlBuilder_.dispose();
        ttlBuilder_ = null;
      }
      onChanged();
      return this;
    }
<pre>
The duration for which all media assets, associated metadata, and search
documents can exist.
</pre>

<code>.google.protobuf.Duration ttl = 3;</code>
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/MediaWarehouseConfig.java