public String getTrainingImage() {
        return this.trainingImage;
    }
<p>
The registry path of the Docker image that contains the training algorithm. For information about docker registry
paths for SageMaker built-in algorithms, see <a
href="https://docs.aws.amazon.com/sagemaker/latest/dg/sagemaker-algo-docker-registry-paths.html">Docker Registry
Paths and Example Code</a> in the <i>Amazon SageMaker developer guide</i>. SageMaker supports both
<code>registry/repository[:tag]</code> and <code>registry/repository[@digest]</code> image path formats. For more
information about using your custom training container, see <a
href="https://docs.aws.amazon.com/sagemaker/latest/dg/your-algorithms.html">Using Your Own Algorithms with Amazon
SageMaker</a>.
</p>
<note>
<p>
You must specify either the algorithm name to the <code>AlgorithmName</code> parameter or the image URI of the
algorithm container to the <code>TrainingImage</code> parameter.
</p>
<p>
For more information, see the note in the <code>AlgorithmName</code> parameter description.
</p>
</note>

@return The registry path of the Docker image that contains the training algorithm. For information about docker
        registry paths for SageMaker built-in algorithms, see <a
        href="https://docs.aws.amazon.com/sagemaker/latest/dg/sagemaker-algo-docker-registry-paths.html">Docker
        Registry Paths and Example Code</a> in the <i>Amazon SageMaker developer guide</i>. SageMaker supports
        both <code>registry/repository[:tag]</code> and <code>registry/repository[@digest]</code> image path
        formats. For more information about using your custom training container, see <a
        href="https://docs.aws.amazon.com/sagemaker/latest/dg/your-algorithms.html">Using Your Own Algorithms
        with Amazon SageMaker</a>.</p> <note>
        <p>
        You must specify either the algorithm name to the <code>AlgorithmName</code> parameter or the image URI
        of the algorithm container to the <code>TrainingImage</code> parameter.
        </p>
        <p>
        For more information, see the note in the <code>AlgorithmName</code> parameter description.
        </p>
aws-java-sdk-sagemaker/src/main/java/com/amazonaws/services/sagemaker/model/AlgorithmSpecification.java