repo initialized with test cases

doc/models/card-verification.md

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+
+# Card Verification
+
+The API caller can opt in to verify the card through PayPal offered verification services (e.g. Smart Dollar Auth, 3DS).
+
+## Structure
+
+`CardVerification`
+
+## Fields
+
+| Name | Type | Tags | Description | Getter | Setter |
+|  --- | --- | --- | --- | --- | --- |
+| `method` | [`?string(CardVerificationMethod)`](../../doc/models/card-verification-method.md) | Optional | The method used for card verification.<br>**Default**: `CardVerificationMethod::SCA_WHEN_REQUIRED`<br>**Constraints**: *Minimum Length*: `1`, *Maximum Length*: `255`, *Pattern*: `^[0-9A-Z_]+$` | getMethod(): ?string | setMethod(?string method): void |
+
+## Example (as JSON)
+
+```json
+{
+  "method": "SCA_WHEN_REQUIRED"
+}
+```
+