public Builder clearParent() {
      parent_ = getDefaultInstance().getParent();
      bitField0_ = (bitField0_ & ~0x00000002);
      onChanged();
      return this;
    }
<pre>
Optional. Target project and location to make a call.

Format: `projects/{project-id}/locations/{location-id}`.

If no parent is specified, a region will be chosen automatically.

Supported location-ids:
    `us`: USA country only,
    `asia`: East asia areas, like Japan, Taiwan,
    `eu`: The European Union.

Example: `projects/project-A/locations/eu`.
</pre>

<code>string parent = 3;</code>

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