Add a constant for "empty speak tag"

tracyboehrer · tracyboehrer · commit a0978a9cbe20 · 2020-07-23T13:57:28.000-05:00
diff --git a/libraries/botbuilder-schema/botbuilder/schema/__init__.py b/libraries/botbuilder-schema/botbuilder/schema/__init__.py
@@ -70,6 +70,7 @@
 from .callerid_constants import CallerIdConstants
 from .health_results import HealthResults
 from .healthcheck_response import HealthCheckResponse
+from .speech_constants import SpeechConstants
 
 __all__ = [
     "Activity",
@@ -139,4 +140,5 @@
     "CallerIdConstants",
     "HealthResults",
     "HealthCheckResponse",
+    "SpeechConstants",
 ]
diff --git a/libraries/botbuilder-schema/botbuilder/schema/speech_constants.py b/libraries/botbuilder-schema/botbuilder/schema/speech_constants.py
@@ -0,0 +1,14 @@
+# Copyright (c) Microsoft Corporation. All rights reserved.
+# Licensed under the MIT License.
+
+
+class SpeechConstants:
+    """
+    Defines constants that can be used in the processing of speech interactions.
+    """
+
+    EMPTY_SPEAK_TAG = '<speak version="1.0" xmlns="https://www.w3.org/2001/10/synthesis" xml:lang="en-US" />'
+    """
+    The xml tag structure to indicate an empty speak tag, to be used in the 'speak' property of an Activity.
+    When set this indicates to the channel that speech should not be generated.
+    """
