gt; <span name="scala.Option" class="extype">Option</span>[<span name="provingground.learning.TruncatedDistribution.mapOpt.B" class="extype">B</span>]</span>)</span><span class="result">: <a href="TruncatedDistribution.html" name="provingground.learning.TruncatedDistribution" id="provingground.learning.TruncatedDistribution" class="extype">TruncatedDistribution</a>[<span name="provingground.learning.TruncatedDistribution.mapOpt.B" class="extype">B</span>]</span></span><div class="fullcomment"><dl class="att