public Builder clearFilter() {
      filter_ = getDefaultInstance().getFilter();
      bitField0_ = (bitField0_ & ~0x00000008);
      onChanged();
      return this;
    }
<pre>
The filter applied to the returned list.
Only the following filterings are supported:
"asset_id = xxxx", which returns asset with specified id.
"asset_id = xxxx, yyyy, zzzz", which returns assets with specified ids.
</pre>

<code>string filter = 4;</code>

@return This builder for chaining.
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/ViewIndexedAssetsRequest.java