def create_alias(AliasName=None, TargetKeyId=None):
    """
    Creates a display name for a customer master key. An alias can be used to identify a key and should be unique. The console enforces a one-to-one mapping between the alias and a key. An alias name can contain only alphanumeric characters, forward slashes (/), underscores (_), and dashes (-). An alias must start with the word "alias" followed by a forward slash (alias/). An alias that begins with "aws" after the forward slash (alias/aws...) is reserved by Amazon Web Services (AWS).
    The alias and the key it is mapped to must be in the same AWS account and the same region.
    To map an alias to a different key, call  UpdateAlias .
    See also: AWS API Documentation
    
    Examples
    The following example creates an alias for the specified customer master key (CMK).
    Expected Output:
    
    :example: response = client.create_alias(
        AliasName='string',
        TargetKeyId='string'
    )
    
    
    :type AliasName: string
    :param AliasName: [REQUIRED]
            String that contains the display name. The name must start with the word 'alias' followed by a forward slash (alias/). Aliases that begin with 'alias/AWS' are reserved.
            

    :type TargetKeyId: string
    :param TargetKeyId: [REQUIRED]
            An identifier of the key for which you are creating the alias. This value cannot be another alias but can be a globally unique identifier or a 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.create_alias(
        # The alias to create. Aliases must begin with 'alias/'. Do not use aliases that begin with 'alias/aws' because they are reserved for use by AWS.
        AliasName='alias/ExampleAlias',
        # The identifier of the CMK whose alias you are creating. You can use the key ID or the Amazon Resource Name (ARN) of the CMK.
        TargetKeyId='1234abcd-12ab-34cd-56ef-1234567890ab',
    )
    
    print(response)
    
    
    """
    pass
