title: Gradle DSL method not found: 'has()'
body: <p>After latest update of android studio , using classpath 'com.android.tools.build:gradle:2.3.0-beta1' , I am getting the following error on gradle sync .<br>
  <strong>Error:Gradle DSL method not found: 'has()'</strong> </p>
  
  <p>Any ideas </p>
  
  <p>Update its casused by android volley , full error :</p>
  
  <p>Error:FAILURE: Build failed with an exception.</p>
  
  <ul>
  <li><p>Where:
  Script 'D:\APPS-MOBI**\Android\volley\bintray.gradle' line: 64</p></li>
  <li><p>What went wrong:
  A problem occurred evaluating script.</p>
  
  <blockquote>
    <p>Could not find method has() for arguments [release] on project ':volley' of type org.gradle.api.Project.</p>
  </blockquote></li>
  <li><p>Try:
  Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.</p></li>
  </ul>