public function fill_relations($relations, $skip_include=false) {
	foreach ($relations as $key => $relation) {
		$this->add_relation($key, $relation, $skip_include);
	}
}
public function fill_relations($relations, $skip_include=false) {
	foreach ($relations as $key => $relation) {
		$this->add_relation($key, $relation, $skip_include);
	}
}
public function fill_relations ( $ relations , $ skip_include = false ) { foreach ( $ relations as $ key => $ relation ) { $ this -> add_relation ( $ key , $ relation , $ skip_include ) ; } }
fills the relationships to other resources
this will end up in response.data.relationships

@see ->add_relation()

@param  array $relations
@return void
fills the relationships to other resources this will end up in response . data . relationships