title: processContents strict vs lax vs skip for xsd:any
body: <p>master.xsd:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt;
  &lt;schema xmlns="http://www.w3.org/2001/XMLSchema" targetNamespace="http://www.gworks.cn/waf_profile"
      xmlns:tns="http://www.gworks.cn/waf_profile" elementFormDefault="qualified"&gt;
      &lt;element name="profile"&gt;
          &lt;complexType&gt;
              &lt;sequence&gt;
                  &lt;element name="aspect"&gt;
                      &lt;complexType&gt;
                          &lt;sequence minOccurs="1" &gt;
                              &lt;any processContents="strict" /&gt;
                          &lt;/sequence&gt;
                          &lt;attribute name="id" type="string" use="required"&gt;&lt;/attribute&gt;
                          &lt;attribute name="class" type="string" use="required"&gt;&lt;/attribute&gt;
                          &lt;attribute name="desc" type="string" use="optional"&gt;&lt;/attribute&gt;
                      &lt;/complexType&gt;
                  &lt;/element&gt;
              &lt;/sequence&gt;
              &lt;attribute name="name" type="string" use="required"&gt;&lt;/attribute&gt;
          &lt;/complexType&gt;
      &lt;/element&gt;
  &lt;/schema&gt;
  </code></pre>
  
  <p>Can I write a XML file against this schema like this:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt;
  &lt;profile name="开发" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xmlns="http://www.gworks.cn/waf_profile"
      xsi:schemaLocation="http://www.gworks.cn/waf_profile http://www.gworks.cn/waf_profile.xsd"&gt;
      &lt;aspect id="security" class="cn.gworks.waf.config.SecurityConfig" desc="安全配置"&gt;
          &lt;security xsi:schemaLocation="http://www.gworks.cn/config_security http://www.gworks.cn/config_security.xsd"&gt;
              &lt;authService impl="com.bgzchina.ccms.security.SSOAuthService" enabled="true"&gt;
                  &lt;certificate&gt;
                      &lt;field name="Token" isKey="true" /&gt;
                  &lt;/certificate&gt;
              &lt;/authService&gt;
              &lt;authService impl="com.bgzchina.ccms.security.NoAuthService" enabled="true"&gt;
                  &lt;certificate&gt;
                      &lt;field name="username" isKey="true" /&gt;
                  &lt;/certificate&gt;
              &lt;/authService&gt;
          &lt;/security&gt;
      &lt;/aspect&gt;
  &lt;/profile&gt;
  </code></pre>
  
  <p>where the child element "security" has its own schema defined.</p>