public java.util.List<PatchGroupPatchBaselineMapping> getMappings() {
        if (mappings == null) {
            mappings = new com.amazonaws.internal.SdkInternalList<PatchGroupPatchBaselineMapping>();
        }
        return mappings;
    }
<p>
Each entry in the array contains:
</p>
<ul>
<li>
<p>
<code>PatchGroup</code>: string (between 1 and 256 characters. Regex:
<code>^([\p{L}\p{Z}\p{N}_.:/=+\-@]*)$)</code>
</p>
</li>
<li>
<p>
<code>PatchBaselineIdentity</code>: A <code>PatchBaselineIdentity</code> element.
</p>
</li>
</ul>

@return Each entry in the array contains:</p>
        <ul>
        <li>
        <p>
        <code>PatchGroup</code>: string (between 1 and 256 characters. Regex:
        <code>^([\p{L}\p{Z}\p{N}_.:/=+\-@]*)$)</code>
        </p>
        </li>
        <li>
        <p>
        <code>PatchBaselineIdentity</code>: A <code>PatchBaselineIdentity</code> element.
        </p>
        </li>
aws-java-sdk-ssm/src/main/java/com/amazonaws/services/simplesystemsmanagement/model/DescribePatchGroupsResult.java