public Builder setAsset(java.lang.String value) {
        if (value == null) {
          throw new NullPointerException();
        }
        asset_ = value;
        bitField0_ |= 0x00000002;
        onChanged();
        return this;
      }
<pre>
Required. The resource name of the asset that the ingested data belongs
to.
</pre>

<code>
string asset = 1 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
</code>

@param value The asset to set.
@return This builder for chaining.
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/IngestAssetRequest.java