public java.util.List<PatchSource> getSources() {
        if (sources == null) {
            sources = new com.amazonaws.internal.SdkInternalList<PatchSource>();
        }
        return sources;
    }
<p>
Information about the patches to use to update the managed nodes, including target operating systems and source
repositories. Applies to Linux managed nodes only.
</p>

@return Information about the patches to use to update the managed nodes, including target operating systems and
        source repositories. Applies to Linux managed nodes only.
aws-java-sdk-ssm/src/main/java/com/amazonaws/services/simplesystemsmanagement/model/GetPatchBaselineResult.java