public Builder putResponse(String statusCodeRegex, IntegrationResponse integrationResponse) {
            responses.put(statusCodeRegex, integrationResponse);
            return this;
        }
Adds a response for the given response regex.

@param statusCodeRegex Status code regular expression.
@param integrationResponse Integration response to set.
@return Returns the builder.
@see IntegrationTrait#getResponses()
smithy-aws-apigateway-traits/src/main/java/software/amazon/smithy/aws/apigateway/traits/IntegrationTrait.java