COBCH1610 Cannot specify visibility on both GETTER and SETTER

You can only set the visibility of one of either the GETTER or SETTER phrases of a property, as shown in the following example:

class-id myClass1.
property-id myProp1 string public.
    setter private.
    set property-value to "1234"
    getter.
    set myString to property-value
end property.
end class.