public CreateRouteResponseResult withModelSelectionExpression(String modelSelectionExpression) {
        setModelSelectionExpression(modelSelectionExpression);
        return this;
    }
<p>
Represents the model selection expression of a route response. Supported only for WebSocket APIs.
</p>

@param modelSelectionExpression
       Represents the model selection expression of a route response. Supported only for WebSocket APIs.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-apigatewayv2/src/main/java/com/amazonaws/services/apigatewayv2/model/CreateRouteResponseResult.java