 class="n">marsclass</span><span class="p">,</span> <span class="n">purefc</span><span class="p">,</span> <span class="n">time</span><span class="p">):</span>
    <span class="sd">&#39;&#39;&#39;Guarantees that the accumulation forecast times were set.</span>

<span class="sd">    If not set, setting the value to some of the most commonly used data sets</span>
<span class="sd">    is attempted. Otherwise, an eror is raised.</span>

<span class="sd">    Parameters</span>
<span class="sd">    ----------</span