apiKeyHash property
APIKeyHash is the non-reversible credential ref (never a plaintext key), so a trace correlates to the key that drove it without the store holding a secret.
Please note: This property should have been non-nullable! Since the specification file does not include a default value (using the "default:" property), however, the generated source code must fall back to having a nullable type. Consider adding a "default:" property in the specification file to hide this note.
Implementation
String? apiKeyHash;