title: How to find dependencies of library?
body: <p>I want to find dependencies of a library. For example, in my project, I <code>implement</code> android support library.</p>
  
  <pre><code>implementation 'com.android.support:appcompat-v7:26.1.0'
  </code></pre>
  
  <p>When I execute <code>./gradlew :app:androidDependencies</code>, </p>
  
  <ul>
  <li><code>android.arch.lifecycle:runtime:1.0.0@aar</code></li>
  <li><code>android.arch.lifecycle:common:1.0.0@jar</code></li>
  <li><code>android.arch.core:common:1.0.0@jar</code></li>
  </ul>
  
  <p>As you see, after 2017 Google IO, google import <code>Lifecycle</code> and other architecture components. </p>
  
  <ul>
  <li>How can <code>gradle</code> tool find dependencies of library(in this case, support 
  library)?</li>
  <li>For developer, is there any command to show dependencies of a library ?</li>
  </ul>