<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
           xmlns:common="http://example.com/common"
           targetNamespace="http://example.com/common"
           elementFormDefault="qualified">

  <xs:complexType name="Address">
    <xs:annotation>
      <xs:documentation>A postal address shared across services.</xs:documentation>
    </xs:annotation>
    <xs:sequence>
      <xs:element name="street" type="xs:string"/>
      <xs:element name="city" type="xs:string"/>
      <xs:element name="postcode" type="xs:string" minOccurs="0"/>
    </xs:sequence>
  </xs:complexType>

  <xs:simpleType name="CountryCode">
    <xs:annotation>
      <xs:documentation>ISO 3166-1 alpha-2 country code (subset).</xs:documentation>
    </xs:annotation>
    <xs:restriction base="xs:string">
      <xs:enumeration value="US"/>
      <xs:enumeration value="GB"/>
      <xs:enumeration value="DE"/>
    </xs:restriction>
  </xs:simpleType>

</xs:schema>