Extra links supported for operators coming from third-party packages:

airflow.serialization.serialized_objects.BUILTIN_OPERATOR_EXTRA_LINKS

tests/core/test_providers_manager.py
#
#
#
import unittest
from airflow.providers_manager import ProvidersManager
ALL_PROVIDERS = [
    'apache-airflow-providers-amazon',
    'apache-airflow-providers-apache-cassandra',
    'apache-airflow-providers-apache-druid',
    'apache-airflow-providers-apache-hdfs',
    'apache-airflow-providers-apache-hive',
    'apache-airflow-providers-apache-kylin',
    'apache-airflow-providers-apache-livy',
    'apache-airflow-providers-apache-pig',
    'apache-airflow-providers-apache-pinot',
    'apache-airflow-providers-apache-spark',
    'apache-airflow-providers-apache-sqoop',
    'apache-airflow-providers-celery',
    'apache-airflow-providers-cloudant',
    'apache-airflow-providers-cncf-kubernetes',
    'apache-airflow-providers-databricks',
    'apache-airflow-providers-datadog',
    'apache-airflow-providers-dingding',
    'apache-airflow-providers-discord',
    'apache-airflow-providers-docker',
    'apache-airflow-providers-elasticsearch',
    'apache-airflow-providers-exasol',
    'apache-airflow-providers-facebook',
    'apache-airflow-providers-ftp',