docs: def get_project_session(project_name, project_directory, map_type=None):
      """
      Load project manager and in memory sqlite db sessionmaker for GSSHA project
      """
      sqlalchemy_url, sql_engine = init_sqlite_memory()
      gdb_sessionmaker = get_sessionmaker(sqlalchemy_url, sql_engine)
      project_manager = ProjectFile(name=project_name,
                                    project_directory=project_directory,
                                    map_type=map_type)
      return project_manager, gdb_sessionmaker