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<h4>setIf</h4>
<pre>public&nbsp;void&nbsp;setIf(java.lang.Object&nbsp;c)</pre>
<div class="block">Only fail if the given expression evaluates to true or the name
 of an existing property.</div>
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<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>c</code> - property name or evaluated expression</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>Ant 1.8.0</dd>
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