pan class="o">.</span><span class="n">printSchema</span><span class="p">()</span>
<span class="go">root</span>
<span class="go"> |-- txt: array (nullable = true)</span>
<span class="go"> |    |-- element: struct (containsNull = true)</span>
<span class="go"> |    |    |-- elementType: string (nullable = true)</span>
<span class="go"> |    |    |-- content: string (nullable = true)</span>
<span class="go"> |    |    |-- metadata: map (nullable = true)</span>
<span class="go"> |    |    |    |-- key: string</