default T returns(final String description) {
        return add(DefaultJavadocTag.RETURN.setValue(description));
    }
Adds an {@link DefaultJavadocTag#RETURN}-tag with the specified value to
this javadoc.

@param description  description for the {@code return} tag
@return             a reference to this
common-parent/codegen/src/main/java/com/speedment/common/codegen/model/trait/HasJavadocTags.java