ndicates whether or not cards can be shown.</p><p>Call this method before attempting a call to <a href="#//api/name/showTopCard">showTopCard</a> or <a href="#//api/name/hideTopCard">hideTopCard</a>.</p>
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			<div class="method-subsection declared-in-section">
				<h4 class="method-subtitle">Declared In</h4>
				<p><code class="declared-in-ref">BTNBrowserInterfaceProtocol.h</code></p>
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