What is the minifyEnabled which is declared in gradle file. May I know the meaning and use of following code of block
<p>What is the use and meaning of following code of block?</p>

<pre><code>buildTypes {
        release {
            minifyEnabled true
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
        }
</code></pre>