<?xml version="1.0" encoding="UTF-8"?>
<schema xmlns="http://www.w3.org/2001/XMLSchema" targetNamespace="http://www.example.org/simplenested" xmlns:tns="http://www.example.org/simplenested">

    <element name="root">
    	<complexType>
    		<sequence>

    			<element ref="tns:child1"></element>
    			<element ref="tns:child2"></element>
    		</sequence>
    	</complexType>
    </element>
    <element name="child1" type="string"></element>
    <element name="child2" type="string"></element>
    
</schema>