This module allows you to render an extra field as a real field (with field label).
The extra fields that can be attached to the entity using
hook_field_extra_fields() lack the overall look and feel of real fields because
real fields have labels and a theme around them while extra fields initially
look pretty bare (unless you theme them manually).
"#pseudo_field" property set to TRUE to the extra field output render
array and it will look just like the real field!