productFlavors

In the productFlavors section, you can find the different flavors:

productFlavors {
     flavorBlueTest {
         applicationId = "com.coolapp.flavorblue.test"
         buildConfigField "String", "api_endpoint ", "\"https://testapi.coolapp.com/\""
     }
     flavorBlueProd{
         applicationId = "com.coolapp.flavorblue"
         buildConfigField "String", " api_endpoint ", "\"https:/api.coolapp.com /\""
     }
     flavorGreenTest{
         applicationId = "com.coolapp.flavorgreen.test"
         buildConfigField "String", " api_endpoint ", "\"test.api.coolapp.com /\""
     }
     flavorGreenProd{
         applicationId = "com.coolapp.flavorgreen"
         buildConfigField "String", " api_endpoint ", "\"api.coolapp.com /\""
     }
 }