As far as we know we are in the `<int:object-to-map-transformer>` and IMO it would be enough just name it as `flatten` and add some docs to it:
````xml
<xsd:attribute name="flatten" type="xsd:string" default="true">
	<xsd:annotation>
		<xsd:documentation><![CDATA[
                	Specifies if the result Map of Maps should be transformed further to flat keys of object's property paths.
                        Default is 'true'.
		]]></xsd:documentation>
	</xsd:annotation>
</xsd:attribute>
````
@garyrussell, WDYT?