code: def package(obj):
      # Prepare the package before any of the sub-commands are invoked.
      obj.package = MetaflowPackage(
          obj.flow, obj.environment, obj.echo, obj.package_suffixes
      )
  
file_path: metaflow/metaflow/plugins/package_cli.py
imports: from metaflow._vendor import click
  from hashlib import sha1
  from metaflow.package import MetaflowPackage
label_desc: Use image node_id 2 for calling a global function with example usage: package(obj) without return types