class_docstr: CodeController inherits from BaseController and manages business logic related to the
  code.
  
  Methods
  -------
  create(code_id=None)
      create a code object within the project
  list()
      list all code objects within the project
  delete(id)
      delete the specified code object from the project
code: def list(self):
      # TODO: Add time filters
      return self.dal.code.query({"model_id": self.model.id})
  
file_path: datmo/datmo/core/controller/code/code.py
imports: from datmo.core.util.i18n import get
  from datmo.core.controller.base import BaseController
  from datmo.core.entity.code import Code
  from datmo.core.util.exceptions import PathDoesNotExist, EnvironmentInitFailed, ArgumentError, CodeDoesNotExist
label_desc: Use image node_id 4 for calling the CodeController obj's underlying member method code with example usage: obj.list() and returns: self