code: def manipulate_search_path(
      self, search_path: ConfigSearchPath
  ) -> None:
      """Add custom config to search path (part of SearchPathPlugin interface)."""
      search_path.append("project", "pkg://your_project.conf")
  
imports: from hydra.core.config_search_path import ConfigSearchPath
  from hydra.plugins.search_path_plugin import SearchPathPlugin
label_desc: Use image node_id 1 for calling the AddCustomConfigToSearchPathPlugin obj's underlying member method code with example usage: obj.manipulate_search_path(search_path) without return types