[DO NOT MERGE][bug reproduction] generated Ruby client crashes on oneOf/discriminator response

[api-clients-generation-pipeline]

See DataDog/datadog-api-spec#6321 Test branch datadog-api-spec/test/romain.ageron/repro-oneof-discriminator-bug

[datadog-prod-us1-4]

 

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🚦 2 Pipeline jobs failed

Run Tests | test / test (3.2, ubuntu-latest)     

🔧 Fix in code. This looks caused by changes in this PR.

ArgumentError: invalid value for "action", action cannot be nil at /lib/datadog_api_client/v2/models/severity_modifier_rule_attributes_response.rb:155

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Missing required label 'changelog/*'.

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CI on my pull request is failing. Help me find and fix the root cause of each failing job below — they were flagged as caused by changes in this PR, so focus on the diff. For each job, explain the failure and propose a fix.

Branch: datadog-api-spec/generated/6321

Run Tests | test / test (3.2, ubuntu-latest)
Commit: 55745e7f8edbfa3f7d3534d9d6d1191c6f36bcf9
Error (code / test):
ArgumentError: invalid value for "action", action cannot be nil at /lib/datadog_api_client/v2/models/severity_modifier_rule_attributes_response.rb:155
CI job: https://github.com/DataDog/datadog-api-client-ruby/actions/runs/30916686678/job/92016492099

🧪 2 Tests failed in 1 job

Run Tests | test  

Delete a severity modifier rule returns "Rule successfully deleted." response from Security Monitoring at features/v2/security_monitoring.feature  

There are unused HTTP interactions left in the cassette:
  - [delete https://api.datadoghq.com/api/v2/security/findings/automation/severity_modifier_rules/ec796c54-ec53-4b2f-bb14-36d4b224f92c] => [204 ""]
  - [delete https://api.datadoghq.com/api/v2/security/findings/automation/severity_modifier_rules/ec796c54-ec53-4b2f-bb14-36d4b224f92c] => [404 "{\"errors\":[{\"status\":\"404\",\"title\":\"Not Found\",\"detail\":\"rule does not exist\"}]}"]

Get a severity modifier rule returns "Successfully retrieved the severity modifier rule" response from Security Monitoring at features/v2/security_monitoring.feature  

There are unused HTTP interactions left in the cassette:
  - [get https://api.datadoghq.com/api/v2/security/findings/automation/severity_modifier_rules/fec045ba-40ba-42ef-a107-f7fba8717e11] => [200 "{\"data\":{\"id\":\"fec045ba-40ba-42ef-a107-f7fba8717e11\",\"type\":\"severity_modifier_r"]
  - [delete https://api.datadoghq.com/api/v2/security/findings/automation/severity_modifier_rules/fec045ba-40ba-42ef-a107-f7fba8717e11] => [204 ""]

ℹ️ Info

No other issues found (see more)

❄️ No new flaky tests detected

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