def get_block_structure_manager(course_key):
 store = modulestore()
 course_usage_key = store.make_course_usage_key(course_key)
 return BlockStructureManager(course_usage_key, store, get_cache())

def get_block_structure_manager ( course_key ) : store = modulestore ( ) course_usage_key = store . make_course_usage_key ( course_key ) return BlockStructureManager ( course_usage_key , store , get_cache ( ) )
returns the manager for managing block structures for the given course .