code: def _build_uri(base_uri, subdirectory):
      if subdirectory != "":
          return f"{base_uri}#{subdirectory}"
      return base_uri
  
imports: import os
  import tempfile
  import zipfile
  from unittest import mock
  import git
  import pytest
  import mlflow
  from mlflow.exceptions import ExecutionException
  from mlflow.projects import _project_spec
  from mlflow.projects.utils import _fetch_git_repo, _fetch_project, _get_storage_dir, _is_valid_branch_name, _is_zip_uri, _parse_subdirectory, fetch_and_validate_project, get_or_create_run, load_project
  from mlflow.utils.mlflow_tags import MLFLOW_PROJECT_ENTRY_POINT, MLFLOW_SOURCE_NAME
  from tests.projects.utils import GIT_PROJECT_BRANCH, GIT_PROJECT_URI, TEST_PROJECT_DIR, TEST_PROJECT_NAME, assert_dirs_equal
label_desc: Use image node_id 1 for calling a global function with example usage: _build_uri(base_uri, subdirectory) and returns: base_uri, base_uri, str, subdirectory