Beta Release 0.5.0 (#3)

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Co-authored-by: PayPalServerSDKs <server-sdks@paypal.com>

doc/models/phone-number.md

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+# Phone Number
+
+The phone number in its canonical international [E.164 numbering plan format](https://www.itu.int/rec/T-REC-E.164/en).
+
+## Structure
+
+`PhoneNumber`
+
+## Fields
+
+| Name | Type | Tags | Description | Getter | Setter |
+|  --- | --- | --- | --- | --- | --- |
+| `nationalNumber` | `string` | Required | The national number, in its canonical international [E.164 numbering plan format](https://www.itu.int/rec/T-REC-E.164/en). The combined length of the country calling code (CC) and the national number must not be greater than 15 digits. The national number consists of a national destination code (NDC) and subscriber number (SN).<br>**Constraints**: *Minimum Length*: `1`, *Maximum Length*: `14`, *Pattern*: `^[0-9]{1,14}?$` | getNationalNumber(): string | setNationalNumber(string nationalNumber): void |
+
+## Example (as JSON)
+
+```json
+{
+  "national_number": "national_number8"
+}
+```
+