particlesHb010.xsd (Microsoft test collection)

According to
  http://www.w3.org/XML/2001/05/xmlschema-test-collection/result-ms-Particles.htm,
it expects the schema to be invalid because it thinks it's a restriction
of a sequnce particle by a choice particle.  However, this
test should succeeds because <choice> is pointless and
must be ignored.  Then, it's a restriction of a sequnce particle
by an element particle and in this case it should be o.k.

Am I right?

Thx,

-Stanley


<?xml version="1.0"?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" targetNamespace="http://xsdtesting" xmlns:x="http://xsdtesting" elementFormDefault="qualified">
 <xsd:complexType name="base">
  <xsd:sequence>
   <xsd:element name="e1" minOccurs="0"/>
   <xsd:element name="e2" minOccurs="0"/>
  </xsd:sequence>
 </xsd:complexType>
 <xsd:element name="doc">
  <xsd:complexType>
   <xsd:complexContent>
    <xsd:restriction base="x:base">
     <xsd:choice>
      <xsd:element name="e1" minOccurs="0"/>
     </xsd:choice>
    </xsd:restriction>
   </xsd:complexContent>
  </xsd:complexType>
 </xsd:element>
</xsd:schema>