p">self</span><span class="o">.</span><span class="n">_faultTolerance</span><span class="p">)</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">_oneLengthFrequentItems</span><span class="p">()</span>

        <span class="bp">self</span><span class="o">.</span><span class="n">_getFaultPatterns</span><span class="p">()</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">_endTime</span> <span class="o">=</span> <span class="n">_ab</span><span cla