1<?xml version="1.0"?>
2<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" targetNamespace="http://xsdtesting" xmlns:x="http://xsdtesting" elementFormDefault="qualified">
3    <xsd:complexType name="base">
4        <xsd:choice>
5            <xsd:element name="e1" minOccurs="1" maxOccurs="3"/>
6            <xsd:element name="e2" minOccurs="1" maxOccurs="unbounded"/>
7        </xsd:choice>
8    </xsd:complexType>
9    <xsd:complexType name="testing">
10        <xsd:complexContent>
11            <xsd:restriction base="x:base">
12                <xsd:choice>
13                    <xsd:element name="e1" minOccurs="2" maxOccurs="3"/>
14                    <xsd:element name="e2" minOccurs="2" maxOccurs="unbounded"/>
15                </xsd:choice>
16            </xsd:restriction>
17        </xsd:complexContent>
18    </xsd:complexType>
19    <xsd:element name="doc" type="x:testing"/>
20</xsd:schema>
21