def enable_policy_type(RootId=None, PolicyType=None):
    """
    Enables a policy type in a root. After you enable a policy type in a root, you can attach policies of that type to the root, any OU, or account in that root. You can undo this by using the  DisablePolicyType operation.
    This operation can be called only from the organization's master account.
    See also: AWS API Documentation
    
    
    :example: response = client.enable_policy_type(
        RootId='string',
        PolicyType='SERVICE_CONTROL_POLICY'
    )
    
    
    :type RootId: string
    :param RootId: [REQUIRED]
            The unique identifier (ID) of the root in which you want to enable a policy type. You can get the ID from the ListRoots operation.
            The regex pattern for a root ID string requires 'r-' followed by from 4 to 32 lower-case letters or digits.
            

    :type PolicyType: string
    :param PolicyType: [REQUIRED]
            The policy type that you want to enable.
            

    :rtype: dict
    :return: {
        'Root': {
            'Id': 'string',
            'Arn': 'string',
            'Name': 'string',
            'PolicyTypes': [
                {
                    'Type': 'SERVICE_CONTROL_POLICY',
                    'Status': 'ENABLED'|'PENDING_ENABLE'|'PENDING_DISABLE'
                },
            ]
        }
    }
    
    
    """
    pass
