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NSLog an object's memory address in overridden description method
-(NSString *) description {
    return [NSString stringWithFormat:@"<SomeClass: %@>nparmeterOne: %@nparameterTwo: %@",
            {???}, self.parameterOne, self.paramterTwo];
}

<SomeClass: 0x4c05600> parameterOne: 12 parameterTwo: sausages

-(NSString *) description {
    return [NSString stringWithFormat:@"<SomeClass: %p>nparmeterOne: %@nparameterTwo: %@",
            self, self.parameterOne, self.paramterTwo];
}