          return obj
  
  
  class ManyHyperlinkedRelatedField(ManyRelatedMixin, HyperlinkedRelatedField):
      pass
  
  
  class HyperlinkedIdentityField(Field):
 
</s> remove     A field that represents the model's identity using a hyperlink.
 </s> add     Represents the instance, or a property on the instance, using hyperlinking. </s> remove     Serializes a related field or related object to a pk value.
 </s> add     Represents a to-one relationship as a pk value. </s> remove     Serializes a to-many related field or related manager to a pk value.
 </s> add     Represents a to-many relationship as a pk value.
    """
    Represents a to-many relationship, using hyperlinking.
    """
          return obj
  
  
  class ManyHyperlinkedRelatedField(ManyRelatedMixin, HyperlinkedRelatedField):
    """
    Represents a to-many relationship, using hyperlinking.
    """
      pass
  
  
  class HyperlinkedIdentityField(Field):
keep keep keep add keep keep keep keep
 Relational field support in browseable API.

Add slug relational fields.
Add quickstart. 
rest_framework/fields.py