Javadoc
This takes in a dot expression representing fields to
include when serialize method is called. You can hand
it one or more fields. Examples are: "hobbies",
"hobbies.people", "people.emails", or "character.inventory".
When using dot notation each field between the dots will
be included in the serialization process. The order of
evaluation is the order in which you call the include method.
The first call to include will be evaluated before other calls to
include or exclude. The field expressions are evaluated in order
you pass to this method.