appbuild.gradle

android {
    flavorDimensions "version"
    productFlavors {
      demo {
          dimension "version"
          firebaseAppDistribution {
              releaseNotes="Release notes for demo version"
              testers="demo@testers.com"
          }
      }
      full {
          dimension "version"
          firebaseAppDistribution {
              releaseNotes="Release notes for full version"
              testers="full@testers.com"
          }
      }
    }
}