iption</h3>
<p>Display or set a property containing the size of a nested
   <a href="../Types/resources.html#collection">Resource Collection</a>.
   Can also be used as a condition. <b>Since Apache Ant 1.7</b></p>
<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr>
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr>
    <td valign="top">property</td>
    <td valign="top">The 