private Field getField(Class<?> owner, String field) {
        try {
            return owner.getField(field);
        } catch (NoSuchFieldException e) {
            return null;
        }
    }
{@code CollQuerySerializer} is a {@link Serializer} implementation for the Java language

@author tiwe
querydsl-collections/src/main/java/com/querydsl/collections/CollQuerySerializer.java