如何在使用Google drive API V3与他人共享时设置文件的功能？

from google.oauth2 import service_account
from googleapiclient.discovery import build

# 设置认证信息
credentials = service_account.Credentials.from_service_account_file('credentials.json')
scoped_credentials = credentials.with_scopes(['https://www.googleapis.com/auth/drive'])

# 创建API客户端
service = build('drive', 'v3', credentials=scoped_credentials)

# 创建文件
file_metadata = {
    'name': 'Shared Document',
    'mimeType': 'application/vnd.google-apps.document'
}
file = service.files().create(body=file_metadata, fields='id').execute()

# 设置共享权限
permission = {
    'role': 'writer',
    'type': 'user',
    'emailAddress': 'user@example.com'
}
permission = service.permissions().create(fileId=file['id'], body=permission).execute()