default T generic(final String generic) {
        return add(Generic.of(generic));
    }
Created a new {@link Generic} with the specified name and adds it to this
model.

@param generic  the name of the new generic variable
@return         a reference to this

@since 2.5
common-parent/codegen/src/main/java/com/speedment/common/codegen/model/trait/HasGenerics.java