private com.google.protobuf.RepeatedFieldBuilderV3<
            com.google.protobuf.Value,
            com.google.protobuf.Value.Builder,
            com.google.protobuf.ValueOrBuilder>
        getInstancesFieldBuilder() {
      if (instancesBuilder_ == null) {
        instancesBuilder_ =
            new com.google.protobuf.RepeatedFieldBuilderV3<
                com.google.protobuf.Value,
                com.google.protobuf.Value.Builder,
                com.google.protobuf.ValueOrBuilder>(
                instances_, ((bitField0_ & 0x00000002) != 0), getParentForChildren(), isClean());
        instances_ = null;
      }
      return instancesBuilder_;
    }
<pre>
Optional. The instances that are the input to token computing API call.
Schema is identical to the prediction schema of the text model, even for
the non-text models, like chat models, or Codey models.
</pre>

<code>
repeated .google.protobuf.Value instances = 2 [(.google.api.field_behavior) = OPTIONAL];
</code>
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/ComputeTokensRequest.java