Update comments.

#667 (comment)

Author: CalebRas

Shared/Samples/Add feature layers/AddFeatureLayersView.swift

@@ -54,7 +54,8 @@ struct AddFeatureLayersView: View {
                 ArcGISEnvironment.authenticationManager.arcGISAuthenticationChallengeHandler = ChallengeHandler()
             }
             .onTeardown {
-                // Resets the URL session challenge handler to use default handling.
+                // Resets the URL session challenge handler to use default handling
+                // and removes all credentials.
                 ArcGISEnvironment.authenticationManager.arcGISAuthenticationChallengeHandler = nil
                 ArcGISEnvironment.authenticationManager.arcGISCredentialStore.removeAll()
             }

Shared/Samples/Display content of utility network container/DisplayContentOfUtilityNetworkContainerView.Model.swift

@@ -74,7 +74,8 @@ extension DisplayContentOfUtilityNetworkContainerView {
 
         /// Cleans up the model's setup.
         func tearDown() {
-            // Resets the URL session challenge handler to use default handling.
+            // Resets the URL session challenge handler to use default handling
+            // and removes all credentials.
             ArcGISEnvironment.authenticationManager.arcGISAuthenticationChallengeHandler = nil
             ArcGISEnvironment.authenticationManager.arcGISCredentialStore.removeAll()
         }

Shared/Samples/Run valve isolation trace/RunValveIsolationTraceView.Model.swift

@@ -113,7 +113,8 @@ extension RunValveIsolationTraceView {
 
         /// Cleans up the model's setup.
         func tearDown() {
-            // Resets the URL session challenge handler to use default handling.
+            // Resets the URL session challenge handler to use default handling
+            // and removes all credentials.
             ArcGISEnvironment.authenticationManager.arcGISAuthenticationChallengeHandler = nil
             ArcGISEnvironment.authenticationManager.arcGISCredentialStore.removeAll()
         }

Shared/Samples/Show utility associations/ShowUtilityAssociationsView.swift

@@ -144,7 +144,8 @@ private extension ShowUtilityAssociationsView {
 
         /// Cleans up the model's setup.
         func tearDown() {
-            // Resets the URL session challenge handler to use default handling.
+            // Resets the URL session challenge handler to use default handling
+            // and removes all credentials.
             ArcGISEnvironment.authenticationManager.arcGISAuthenticationChallengeHandler = nil
             ArcGISEnvironment.authenticationManager.arcGISCredentialStore.removeAll()
         }

Shared/Samples/Trace utility network/TraceUtilityNetworkView.Model.swift

@@ -93,7 +93,8 @@ extension TraceUtilityNetworkView {
 
         /// Cleans up the model's setup.
         func tearDown() {
-            // Resets the URL session challenge handler to use default handling.
+            // Resets the URL session challenge handler to use default handling
+            // and removes all credentials.
             ArcGISEnvironment.authenticationManager.arcGISAuthenticationChallengeHandler = nil
             ArcGISEnvironment.authenticationManager.arcGISCredentialStore.removeAll()
         }