Merge branch 'github/master'

Author: kokoro-team

PlayCoreKtx/app/build.gradle

@@ -54,7 +54,9 @@ android {
         debug {}
         release {
             minifyEnabled true
-            signingConfig signingConfigs.release
+            if (project.hasProperty("signing.storeFile")) {
+                signingConfig signingConfigs.release
+            }
         }
     }
 
@@ -66,13 +68,10 @@ android {
 
     kotlinOptions {
         jvmTarget = "1.8"
+        freeCompilerArgs += "-Xopt-in=kotlin.RequiresOptIn"
     }
 
     dynamicFeatures = [':features:picture']
-
-    kotlinOptions {
-        freeCompilerArgs += "-Xopt-in=kotlin.RequiresOptIn"
-    }
 }
 
 play {

PlayCoreKtx/app/src/main/java/com/google/android/samples/dynamicfeatures/ui/MainFragment.kt

@@ -107,7 +107,7 @@ class MainFragment : Fragment(R.layout.fragment_main) {
                 installViewModel.invokePictureSelection()
             }
 
-            btnToggleLight.setOnClickListener { light ->
+            btnToggleLight.setOnClickListener { _ ->
                 startModuleWhenReady = false
                 colorViewModel.lightsOn.value = !colorViewModel.lightsOn.value
             }

PlayCoreKtx/features/picture/build.gradle

@@ -33,6 +33,7 @@ android {
 
     kotlinOptions {
         jvmTarget = "1.8"
+        freeCompilerArgs += "-Xopt-in=kotlin.RequiresOptIn"
     }
 }