code: def test__is_valid_uri(uri, expected):
      assert _is_valid_uri(uri) == expected
  
file_path: mlflow/tests/gateway/test_utils.py
imports: import pytest
  from mlflow.exceptions import MlflowException
  from mlflow.gateway.utils import SearchRoutesToken, _is_valid_uri, assemble_uri_path, check_configuration_route_name_collisions, get_gateway_uri, is_valid_endpoint_name, resolve_route_url, set_gateway_uri
label_desc: Use image node_id 5 for calling a global function with example usage: test__is_valid_uri(uri, expected) without return types