          serializers.BooleanField: 'boolean',
          serializers.NullBooleanField: 'boolean',
          serializers.CharField: 'string',
          serializers.URLField: 'url',
          serializers.EmailField: 'email',
          serializers.RegexField: 'regex',
          serializers.SlugField: 'slug',
          serializers.IntegerField: 'integer',
          serializers.FloatField: 'float',
 
</s> remove                     }
 </s> add                     },
                    'uuid_field': {
                        "type": "string",
                        "required": True,
                        "read_only": False,
                        "label": "UUID field",
                    },
        serializers.UUIDField: 'string',
          serializers.BooleanField: 'boolean',
          serializers.NullBooleanField: 'boolean',
          serializers.CharField: 'string',
        serializers.UUIDField: 'string',
          serializers.URLField: 'url',
          serializers.EmailField: 'email',
          serializers.RegexField: 'regex',
          serializers.SlugField: 'slug',
          serializers.IntegerField: 'integer',
          serializers.FloatField: 'float',
keep keep add keep keep keep keep keep keep
 Fixed schema for UUIDField in SimpleMetadata. (#5872)

* fix schema for UUIDField

* Add unit test for d4c8f2db 
rest_framework/metadata.py