title: Gradle sync fails for com.amazonaws:aws-android-sdk-mobile-client:2.8.5()
body: <p>I am trying to use login functionality of AWS - Amazon Cognito for my Android App.I am referring to the documentation - 
  <a href="https://docs.aws.amazon.com/aws-mobile/latest/developerguide/mobile-hub-add-aws-mobile-user-sign-in.html" rel="nofollow noreferrer">https://docs.aws.amazon.com/aws-mobile/latest/developerguide/mobile-hub-add-aws-mobile-user-sign-in.html</a></p>
  
  <p>I have added 3 sets of dependencies as per the documentation as below code snippet</p>
  
  <pre><code>// Mobile Client for initializing the SDK  
      implementation 'com.amazonaws:aws-android-sdk-mobile-client:2.8.5'  { transitive = true }  
  // Cognito UserPools for SignIn  
      implementation 'com.android.support:support-v4:28.0.0'
      implementation 'com.amazonaws:aws-android-sdk-auth-userpools:2.8.5' { transitive = true }  
  // Sign in UI Library  
      implementation 'com.android.support:appcompat-v7:28.0.0'
      implementation 'com.amazonaws:aws-android-sdk-auth-ui:2.8.5'  { transitive = true }
  </code></pre>
  
  <p>But my gradle sync is failing with the below error:</p>
  
  <pre><code>Could not find method com.amazonaws:aws-android-sdk-mobile-client:2.8.5() for arguments [build_6vy0z59k6cznmh7b4jt6hu05j$_run_closure2$_closure6@46f6d617] on object of type org.gradle.api.internal.artifacts.dsl.dependencies.DefaultDependencyHandler.
  </code></pre>
  
  <p>I guess something is wrong with android-sdk-mobile-client dependency but am not sure what is the issue</p>