private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.vision.v1p4beta1.InputConfig,
            com.google.cloud.vision.v1p4beta1.InputConfig.Builder,
            com.google.cloud.vision.v1p4beta1.InputConfigOrBuilder>
        getInputConfigFieldBuilder() {
      if (inputConfigBuilder_ == null) {
        inputConfigBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.vision.v1p4beta1.InputConfig,
                com.google.cloud.vision.v1p4beta1.InputConfig.Builder,
                com.google.cloud.vision.v1p4beta1.InputConfigOrBuilder>(
                getInputConfig(), getParentForChildren(), isClean());
        inputConfig_ = null;
      }
      return inputConfigBuilder_;
    }
<pre>
Required. Information about the input file.
</pre>

<code>.google.cloud.vision.v1p4beta1.InputConfig input_config = 1;</code>
java-vision/proto-google-cloud-vision-v1p4beta1/src/main/java/com/google/cloud/vision/v1p4beta1/AsyncAnnotateFileRequest.java