@Override
    public void run() {
        shape.accept(new GetterVisitor());
    }
Generates getter methods for each shape member or the value type held by the trait.

<p>Optional member getters will return the member type wrapped in an {@code Optional<T>}.
smithy-trait-codegen/src/main/java/software/amazon/smithy/traitcodegen/generators/GetterGenerator.java