title: Room Schema Export Directory - Could not find method javaCompileOptions() for arguments
body: <p>I am using Android Database Component Room and I want to export the schema using the following code in my dependencies in App Gradle : </p>
  
  <pre><code>apply plugin: 'com.android.application'
  
  android {
      compileSdkVersion 29
      buildToolsVersion "29.0.2"
      defaultConfig {
          applicationId "com.example.myapplication"
          minSdkVersion 14
          targetSdkVersion 29
          versionCode 1
          versionName "1.0"
          testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
      }
  
      javaCompileOptions{
          annotationProcessorOptions{
              arguments= ["room.schemaLocation":
                                  "$projectDir/schemas".toString()]
          }}
      buildTypes {
          release {
              minifyEnabled false
              proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
          }
      }
  
  }
  
  dependencies {
      implementation fileTree(dir: 'libs', include: ['*.jar'])
      implementation 'androidx.appcompat:appcompat:1.0.2'
      implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
      implementation 'com.google.android.material:material:1.0.0'
      testImplementation 'junit:junit:4.12'
      androidTestImplementation 'androidx.test.ext:junit:1.1.0'
      androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.1'
      implementation 'androidx.appcompat:appcompat:1.0.0'
  
      //room
      implementation "android.arch.persistence.room:runtime:1.1.1"
      annotationProcessor "android.arch.persistence.room:compiler:1.1.1"
  
  
  }
  </code></pre>
  
  <p>However i am facing the following error:</p>
  
  <pre><code>ERROR: Could not find method javaCompileOptions() for arguments [build_ao1pt454otpr48gba8f3r0tu$_run_closure1$_closure4@53308877] on object of type com.android.build.gradle.internal.dsl.BaseAppModuleExtension.
  </code></pre>
  
  <p>This is my code for AppDatabase:</p>
  
  <pre><code>package com.example.myapplication.database;
  
  import android.content.Context;
  import android.util.Log;
  
  import androidx.room.Database;
  import androidx.room.Room;
  import androidx.room.RoomDatabase;
  
  import com.example.myapplication.model.DataItem;
  
  //Database which list the entities in database and the DAO
  @Database(entities = {DataItem.class}, version = 1, exportSchema = false)
  public abstract class AppDatabase extends RoomDatabase {
      private static final String LOG_TAG = AppDatabase.class.getSimpleName();
      private static final Object LOCK = new Object();
      private static final String DATABASE_NAME = "Datalist";
      private static AppDatabase sInstance;
  
      public static AppDatabase getInstance(Context context) {
          if (sInstance == null) {
              synchronized (LOCK) {
                  Log.d(LOG_TAG, "Creating new database instance");
                  sInstance = Room.databaseBuilder(context.getApplicationContext(),
                          AppDatabase.class, AppDatabase.DATABASE_NAME)
                          .build();
              }
          }
          Log.d(LOG_TAG, "Getting the database instance");
          return sInstance;
      }
  
      public abstract DataDao dataItemDao();
  
      public static void destroyAppDatabase(){
          sInstance = null;
      }
  }
  
  </code></pre>
  
  <p>This is my Project Gradle:</p>
  
  <pre><code>// Top-level build file where you can add configuration options common to all sub-projects/modules.
  
  buildscript {
      repositories {
          google()
          jcenter()
  
      }
      dependencies {
          classpath 'com.android.tools.build:gradle:3.5.2'
  
          // NOTE: Do not place your application dependencies here; they belong
          // in the individual module build.gradle files
      }
  }
  
  allprojects {
      repositories {
          google()
          jcenter()
  
      }
  }
  
  task clean(type: Delete) {
      delete rootProject.buildDir
  }
  </code></pre>
  
  <p>I am not sure what I did wrong. Can anyone please advise? Thank you!</p>