void DrawAudienceNetworkSettings()
        {
            EditorGUILayout.Space();
            DrawUppercaseSection("FACEBOOK_AUDIENCE_NETWORK_SETUP_FOLDOUT_KEY", "AUDIENCE NETWORK", () =>
            {
                    #if !EM_FBAN
                EditorGUILayout.HelpBox(FBAudienceImportInstruction, MessageType.Warning);
                if (GUILayout.Button("Download FB Audience Plugin", GUILayout.Height(EM_GUIStyleManager.buttonHeight)))
                {
                    EM_ExternalPluginManager.DownloadFacebookAudiencePlugin();
                }
                    #else
                EditorGUILayout.HelpBox(FBAudienceAvailMsg, MessageType.Info);
                if (GUILayout.Button("Download FB Audience Network Plugin", GUILayout.Height(EM_GUIStyleManager.buttonHeight)))
                {
                    EM_ExternalPluginManager.DownloadFacebookAudiencePlugin();
                }

                // Default placements.
                EditorGUILayout.Space();
                EditorGUILayout.LabelField("Default Placement", EditorStyles.boldLabel);
                EditorGUI.indentLevel++;
                EditorGUILayout.PropertyField(AdProperties.fbAudienceDefaultBannerAdId.property, AdProperties.fbAudienceDefaultBannerAdId.content, true);
                EditorGUILayout.PropertyField(AdProperties.fbAudienceDefaultInterstitialAdId.property, AdProperties.fbAudienceDefaultInterstitialAdId.content, true);
                EditorGUILayout.PropertyField(AdProperties.fbAudienceDefaultRewardedAdId.property, AdProperties.fbAudienceDefaultRewardedAdId.content, true);
                EditorGUI.indentLevel--;

                // Custom placements.
                EditorGUILayout.Space();
                EditorGUILayout.LabelField("Custom Placements", EditorStyles.boldLabel);
                EditorGUI.indentLevel++;
                EditorGUILayout.PropertyField(AdProperties.fbAudienceCustomBannerAdIds.property, AdProperties.fbAudienceCustomBannerAdIds.content, true);
                EditorGUILayout.PropertyField(AdProperties.fbAudienceCustomInterstitialAdIds.property, AdProperties.fbAudienceCustomInterstitialAdIds.content, true);
                EditorGUILayout.PropertyField(AdProperties.fbAudienceCustomRewardedAdIds.property, AdProperties.fbAudienceCustomRewardedAdIds.content, true);
                EditorGUI.indentLevel--;

                // Test mode.
                EditorGUILayout.Space();
                EditorGUILayout.LabelField("Test Mode", EditorStyles.boldLabel);
                EditorGUILayout.PropertyField(AdProperties.fbAudienceEnableTestMode.property, AdProperties.fbAudienceEnableTestMode.content);
                if (AdProperties.fbAudienceEnableTestMode.property.boolValue)
                {
                    DrawPropertyAsResizableArray(AdProperties.fbAudienceTestDeviceIds.property, "Test Device IDs");
                    DrawAllElementsInArrayProperty(AdProperties.fbAudienceTestDeviceIds.property);
                }
                else
                {
                    AdProperties.fbAudienceTestDeviceIds.property.ClearArray();
                }
                    #endif
            });
        }