selectionPattern property
Specifies the regular expression (regex) pattern used to choose an
integration response based on the response from the back end. For example,
if the success response returns nothing and the error response returns some
string, you could use the .+ regex to match error response.
However, make sure that the error response does not contain any newline
(\n) character in such cases. If the back end is an AWS Lambda
function, the AWS Lambda function error header is matched. For all other
HTTP and AWS back ends, the HTTP status code is matched.
Implementation
final String? selectionPattern;