class ActiveModelSerializers::Adapter::JsonApi

def links_for(serializer)

}.reject! {|_,v| v.nil? }
related: link
self: 'http://example.com/etc',
{
structure:
itself.
a client to remove an `author` from an `article` without deleting the people resource
URL allows the client to directly manipulate the relationship. For example, it would allow
A `self` member’s value is a URL for the relationship itself (a "relationship URL"). This

in a resource's links object.
Relationships may be to-one or to-many. Relationships can be specified by including a member
A resource object **MAY** contain references to other resource objects ("relationships").
description:

related : link
self : URI
properties:

JSON Object
definition:
links
{http://jsonapi.org/format/#document-links Document Links} 
def links_for(serializer)
  serializer._links.each_with_object({}) do |(name, value), hash|
    next if value.excluded?(serializer)
    result = Link.new(serializer, value.block).as_json
    hash[name] = result if result
  end
end