d()</pre>
<div class="deprecationBlock"><span class="deprecatedLabel">Deprecated.</span></div>
<div class="block">Releases the period.</div>
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<h4>prepare</h4>
<pre class="methodSignature">public&nbsp;void&nbsp;prepare&#8203;(<a href="MediaPeriod.Callback.html" title="interface in com.google.android.exoplayer2.source">MediaPeriod.Callback</a>&nbsp;callback,