enforcing name uniqueness

schema/projects/gomodh.xsd

@@ -17,6 +17,10 @@
       </xs:choice>
       <xs:attribute name="baseURL" type="t_net_http_basic_uri" use="required"/>
     </xs:complexType>
+    <xs:key name="key_name">
+      <xs:selector xpath="./*"/>
+      <xs:field xpath="@name"/>
+    </xs:key>
   </xs:element>
 
 </xs:schema>