code: def test_find_app_custom_app_plugin():
      """This test requires the package in tests/resources/mlflow-test-plugin to be installed"""
      assert (
          server._find_app("custom_app")
          == "mlflow_test_plugin.app:custom_app"
      )
  
file_path: mlflow/tests/server/test_init.py
imports: import sys
  from unittest import mock
  import pytest
  from mlflow import server
  from mlflow.exceptions import MlflowException
label_desc: Use image node_id 2 for calling a global function with example usage: test_find_app_custom_app_plugin() without return types