                          action='put',
                          encoding='application/json',
                          fields=[
                              coreapi.Field('pk', required=True, location='path'),
                              coreapi.Field('a', required=True, location='form'),
                              coreapi.Field('b', required=False, location='form')
                          ]
                      ),
                      'partial_update': coreapi.Link(
                          url='/example/{pk}/',
 
</s> remove                             coreapi.Field('a', required=False, location='form'),
 </s> add                             coreapi.Field('a', required=False, location='form', description='A field description'), </s> remove                             coreapi.Field('a', required=True, location='form'),
 </s> add                             coreapi.Field('a', required=True, location='form', description='A field description'), </s> remove     a = serializers.CharField(required=True)
 </s> add     a = serializers.CharField(required=True, help_text='A field description') </s> remove             field = coreapi.Field(name=field.source, location='form', required=required)
 </s> add             description = force_text(field.help_text) if field.help_text else ''
            field = coreapi.Field(
                name=field.source,
                location='form',
                required=required,
                description=description
            )
                            coreapi.Field('a', required=True, location='form', description='A field description'),
                          action='put',
                          encoding='application/json',
                          fields=[
                              coreapi.Field('pk', required=True, location='path'),
                            coreapi.Field('a', required=True, location='form', description='A field description'),
                              coreapi.Field('b', required=False, location='form')
                          ]
                      ),
                      'partial_update': coreapi.Link(
                          url='/example/{pk}/',
keep keep keep keep replace keep keep keep keep keep
 Add form field descriptions to schemas (#4387) 
tests/test_schemas.py