public UpdateFeatureMetadataRequest withParameterAdditions(FeatureParameter... parameterAdditions) {
        if (this.parameterAdditions == null) {
            setParameterAdditions(new java.util.ArrayList<FeatureParameter>(parameterAdditions.length));
        }
        for (FeatureParameter ele : parameterAdditions) {
            this.parameterAdditions.add(ele);
        }
        return this;
    }
<p>
A list of key-value pairs that you can add to better describe the feature.
</p>
<p>
<b>NOTE:</b> This method appends the values to the existing list (if any). Use
{@link #setParameterAdditions(java.util.Collection)} or {@link #withParameterAdditions(java.util.Collection)} if
you want to override the existing values.
</p>

@param parameterAdditions
       A list of key-value pairs that you can add to better describe the feature.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-sagemaker/src/main/java/com/amazonaws/services/sagemaker/model/UpdateFeatureMetadataRequest.java