isBrazilPostCode method
This method does make a validate to check value
is even
a Brazil post code
Example
isBrazilPostCode('69945-970'); // true
isBrazilPostCode('69945-9') // false
isBrazilPostCode('699A5-9AA') // false
Implementation
bool isBrazilPostCode(String value) =>
expression.brazilPostCode.hasMatch(value);