<#--
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  or more contributor license agreements.  See the NOTICE file
  distributed with this work for additional information
  regarding copyright ownership.  The ASF licenses this file
  to you under the Apache License, Version 2.0 (the
  "License"); you may not use this file except in compliance
  with the License.  You may obtain a copy of the License at
  
    http://www.apache.org/licenses/LICENSE-2.0
  
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-->
<#macro m1 a b=a>
${a} ${b}
</#macro>
<@m1 a="1"/>
<#macro m2 a=b b="">
${a} ${b}
</#macro>
<@m2 b="2"/>
<#macro m3 d b=c[a] a=d c={"3":"4"}>
${b}
</#macro>
<@m3 d="3"/>
<#attempt>
<@m3 d="4"/>
<#recover>
m3 with d="4" Failed!
</#attempt>