public Map<String, String> getRequestParameters() {
        return requestParameters;
    }
Gets the request parameter mappings of the integration.

<p>Each key is an expression used to extract a value from the request,
and each value is an expression of where to place the value in the
downstream request. Supported request parameters are querystring, path,
header, and body.

@return Returns the request parameters.
@see <a href="https://docs.aws.amazon.com/apigateway/latest/developerguide/api-gateway-swagger-extensions-integration-requestParameters.html">Request parameters</a>
smithy-aws-apigateway-traits/src/main/java/software/amazon/smithy/aws/apigateway/traits/IntegrationTrait.java