def enable_key(KeyId=None):
    """
    Marks a key as enabled, thereby permitting its use.
    See also: AWS API Documentation
    
    Examples
    The following example enables the specified CMK.
    Expected Output:
    
    :example: response = client.enable_key(
        KeyId='string'
    )
    
    
    :type KeyId: string
    :param KeyId: [REQUIRED]
            A unique identifier for the customer master key. This value can be a globally unique identifier or the fully specified ARN to a key.
            Key ARN Example - arn:aws:kms:us-east-1:123456789012:key/12345678-1234-1234-1234-123456789012
            Globally Unique Key ID Example - 12345678-1234-1234-1234-123456789012
            

    :return: response = client.enable_key(
        # The identifier of the CMK to enable. You can use the key ID or the Amazon Resource Name (ARN) of the CMK.
        KeyId='1234abcd-12ab-34cd-56ef-1234567890ab',
    )
    
    print(response)
    
    
    """
    pass
