public String getApiKeySelectionExpression() {
        return this.apiKeySelectionExpression;
    }
<p>
An API key selection expression. Supported only for WebSocket APIs. See <a href=
"https://docs.aws.amazon.com/apigateway/latest/developerguide/apigateway-websocket-api-selection-expressions.html#apigateway-websocket-api-apikey-selection-expressions"
>API Key Selection Expressions</a>.
</p>

@return An API key selection expression. Supported only for WebSocket APIs. See <a href=
        "https://docs.aws.amazon.com/apigateway/latest/developerguide/apigateway-websocket-api-selection-expressions.html#apigateway-websocket-api-apikey-selection-expressions"
        >API Key Selection Expressions</a>.
aws-java-sdk-apigatewayv2/src/main/java/com/amazonaws/services/apigatewayv2/model/Api.java