Copy builder uses getters even when they dont exist

[AttePietikainen]

In the version 1.1.5, the copy builder has started using getX() methods instead of just the field. So if there is a field without a getter function, like most public final fields would not have, the copy builder generated does not work properly.

Say we have the following class

public class Foo {
   public final String bar;
}

This would generate builder like

public static final class Builder {
        private String bar;

        public Builder() {
        }

        public Builder(final Foo copy) {
            this.bar = copy.getBar();
        }

        public Builder withBar(final String bar) {
            this.bar = bar;
            return this;
        }

        public Foo build() {
            return new Foo(this);
        }
    } 

this.bar = copy.getBar();
This part is not valid code as the class does not have getBar function