missing <gml:reverseProperty> element for binary association

Created by: yaozhihang

Hi,

after checking the Energy-ADE XSD schema file I've noticed the following issue: According to the ISO 19136;2009(E), an annotation tag with gml:reverseProperty element is needed to represent the assocation which is navigable in both directions. For example, the following XML code should be embedded into the XML code of the EnergyConversionSystem class:

<element name="provides" minOccurs="0" maxOccurs="unbounded" type="energy:EnergyDemandPropertyType" />
    <annotation>
        <appinfo><gml:reverseProperty>energy:isProvidedBy</gml:reverseProperty></appinfo> 
    </annotation>
</element>

Zhihang