code: def metadata(self, id_, packages, python, platform):
      # this method unfortunately relies on the implementation detail for
      # conda environments and has the potential to break all of a sudden.
      packages_to_filenames = {
          package["url"]: package["url"].split("/")[-1]
          for package in packages
      }
      directories = self.info()["pkgs_dirs"]
      # search all package caches for packages
      metadata = {
          url: os.path.join(d, file)
          for url, file in packages_to_filenames.items()
          for d in directories
          if os.path.isdir(d)
          and file in os.listdir(d)
          and os.path.isfile(os.path.join(d, file))
      }
      # set package tarball local paths to None if package tarballs are missing
      for url in packages_to_filenames:
          metadata.setdefault(url, None)
      return metadata
  
imports: import json
  import os
  import subprocess
  import tempfile
  from metaflow.exception import MetaflowException
  from metaflow.util import which
  from .utils import conda_platform
label_desc: Use image node_id 7 for calling the Micromamba obj's underlying member method code with example usage: obj.metadata(id_, packages, python, platform) and returns: metadata