title: Error:No such property: manifestPlaceholders for class: com.android.build.gradle.managed.ProductFlavor
body: <p>I use <code>'gradle-experimental:0.4.0'</code> and I want to use onesignal sdk for my project. when I try to build the project with the code which have been mentioned in the example here I get this error:</p>
  
  <blockquote>
    <p>Error:No such property: manifestPlaceholders for class:
    com.android.build.gradle.managed.ProductFlavor.</p>
  </blockquote>
  
  <p>Code in Sample</p>
  
  <pre><code>android {
      defaultConfig {
          manifestPlaceholders = [manifestApplicationId: "${applicationId}",
                                  onesignal_app_id: "bbbbbb-324f-34fd-bed1-df8f05be55ba",
                                  onesignal_google_project_number: "11111111"]
      }
   }
  </code></pre>
  
  <p>Code in my project</p>
  
  <pre><code>model {
      android {
          compileSdkVersion = 23
          buildToolsVersion = "23.0.2"
             defaultConfig.with {  
                 applicationId = "com.myproject.company"   
                   manifestPlaceholders = [manifestApplicationId: "${applicationId}",
                                      onesignal_app_id: "234jfi4-2342-4a23-234-24235436546",
                                      onesignal_google_project_number: "111111111"]
  
  
              minSdkVersion.apiLevel = 16
              targetSdkVersion.apiLevel = 23
              versionCode = 3    
          }
  </code></pre>
  
  <p>Internet search revealed nothing. What should I do to remove this error?</p>