https://docs.cloud.google.com/appengine/docs/standard/java-gen2/reference/services/bundled/latest/com.google.appengine.api.urlfetch.URLFetchServicePb.URLFetchRequest.RequestMethod
Enum URLFetchServicePb.URLFetchRequest.RequestMethod (5.0.0) | App Engine standard environment |...
app engineenumstandardenvironment