import com.moengage.flutter.MoEInitializer
import com.moengage.core.MoEngage
import com.moengage.core.DataCenter
...
// `this` is the instance of the application class and "YOUR_WORKSPACE_ID" is the Workspace ID from the dashboard.
val moEngage: MoEngage.Builder = MoEngage.Builder(this,"YOUR_WORKSPACE_ID", DataCenter.DATA_CENTER_X) 
MoEInitializer.initialiseDefaultInstance(context = this, builder = moEngage)

import com.moengage.flutter.MoEInitializer;
import com.moengage.core.MoEngage;
import com.moengage.core.DataCenter;
...
// `this` is the instance of the application class and "YOUR_WORKSPACE_ID" is the Workspace ID from the dashboard.
MoEngage.Builder moEngage = new MoEngage.Builder(this, "YOUR_WORKSPACE_ID", YOUR_DATA_CENTER);
MoEInitializer.initialiseDefaultInstance(this, moEngage);