      """
      Allows providing a list of coreapi.Fields,
      plus an optional description.
      """
      def __init__(self, fields, description=''):
          """
          Parameters:
  
          * `fields`: list of `coreapi.Field` instances.
          * `descripton`: String description for view. Optional.
 
</s> remove             encoding=None,
 </s> add             encoding=self._encoding,
    def __init__(self, fields, description='', encoding=None):
      """
      Allows providing a list of coreapi.Fields,
      plus an optional description.
      """
    def __init__(self, fields, description='', encoding=None):
          """
          Parameters:
  
          * `fields`: list of `coreapi.Field` instances.
          * `descripton`: String description for view. Optional.
keep keep keep keep replace keep keep keep keep keep
 Add schema to ObtainAuthToken
Add encoding parameter to ManualSchema

Closes #5676

* Fixed lint errors
* Added docs for ManualSchema encoding parameter 
rest_framework/schemas/inspectors.py