code: def add_sqlvm_to_group(instance, sql_virtual_machine_group_resource_id, sql_service_account_password,
                         cluster_operator_account_password, cluster_bootstrap_account_password=None):
      '''
      Add a SQL virtual machine to a SQL virtual machine group.
      '''
  
      if not is_valid_resource_id(sql_virtual_machine_group_resource_id):
          raise CLIError("Invalid SQL virtual machine group resource id.")
  
      instance.sql_virtual_machine_group_resource_id = sql_virtual_machine_group_resource_id
      instance.wsfc_domain_credentials = WsfcDomainCredentials(cluster_bootstrap_account_password=cluster_bootstrap_account_password,
                                                               cluster_operator_account_password=cluster_operator_account_password,
                                                               sql_service_account_password=sql_service_account_password)
      return instancf add_sqlvm_to_group(instance, sql_virtual_machine_group_resource_id, sql_service_account_password,
                         cluster_operator_account_password, cluster_bootstrap_account_password=None):
      '''
      Add a SQL virtual machine to a SQL virtual machine group.
      '''
  
      if not is_valid_resource_id(sql_virtual_machine_group_resource_id):
          raise CLIError("Invalid SQL virtual machine group resource id.")
  
      instance.sql_virtual_machine_group_resource_id = sql_virtual_machine_group_resource_id
      instance.wsfc_domain_credentials = WsfcDomainCredentials(cluster_bootstrap_account_password=cluster_bootstrap_account_password,
                                                               cluster_operator_account_password=cluster_operator_account_password,
                                                               sql_service_account_password=sql_service_account_password)
      return instance
docs: Add a SQL virtual machine to a SQL virtual machine group.