code: def get_writer(
      self, config, ctx: "Context", uri: URI, type_name: str
  ) -> Union[JsonMetricFileWriter, JsonMetricRestfulWriter]:
      if uri.scheme == "http" or uri.scheme == "https":
          return JsonMetricRestfulWriter(
              ctx,
              _ArtifactType(
                  uri=uri,
                  metadata=MetricOutputMetadata(),
                  type_name=type_name,
              ),
          )
      elif uri.scheme == "file":
          return JsonMetricFileWriter(
              ctx,
              _ArtifactType(
                  uri=uri,
                  metadata=MetricOutputMetadata(),
                  type_name=type_name,
              ),
          )
      else:
          raise ValueError(f"unsupported uri scheme: {uri.scheme}")
  
imports: import json
  import logging
  import typing
  from pathlib import Path
  from typing import Dict, Optional, Union
  import requests
  from fate.components.core.essential import JsonMetricArtifactType
  from .._base_type import URI, ArtifactDescribe, Metadata, MetricOutputMetadata, _ArtifactType, _ArtifactTypeWriter
label_desc: Use image node_id 2 for calling the JsonMetricArtifactDescribe obj's underlying member method code with example usage: obj.get_writer(config, ctx, uri, type_name) and returns: JsonMetricRestfulWriter, JsonMetricFileWriter