Create a PostalAddress.
You can pass null if a component is not set.
| po_box | the PO Box | 
| extension | the address extension | 
| street | the street name and number | 
| locality | the locality (city, town or village) name | 
| region | the region (state or province) name | 
| postal_code | the postal code | 
| country | the country name | 
| address_format | the address format | 
| uid | external UID for the address instance | 
0.5.1