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AWS::AppSync::ChannelNamespace HandlerConfigs
The HandlerConfigs property type specifies the configuration for the OnPublish and OnSubscribe
            handlers.
Syntax
To declare this entity in your AWS CloudFormation template, use the following syntax:
JSON
{ "OnPublish" :HandlerConfig, "OnSubscribe" :HandlerConfig}
Properties
- OnPublish
- 
                    The configuration for the OnPublishhandler.Required: No Type: HandlerConfig Update requires: No interruption 
- OnSubscribe
- 
                    The configuration for the OnSubscribehandler.Required: No Type: HandlerConfig Update requires: No interruption