href="#private-methods-and-variables" title="Permalink to this headline">¶</a></h2>
<p>Methods and variables that are only accessed internally,
such as utility and helper functions that your public methods use for
code abstraction, should be prefixed with an underscore.</p>
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="k">public</span> <span class="k">function</span> <span class="nf">convert_text</span><span class="p">()</span>
<span class="k">private</span> <span class="k