def add_tags_to_resource(ResourceName=None, Tags=None):
    """
    Adds up to 50 cost allocation tags to the named resource. A cost allocation tag is a key-value pair where the key and value are case-sensitive. You can use cost allocation tags to categorize and track your AWS costs.
    When you apply tags to your ElastiCache resources, AWS generates a cost allocation report as a comma-separated value (CSV) file with your usage and costs aggregated by your tags. You can apply tags that represent business categories (such as cost centers, application names, or owners) to organize your costs across multiple services. For more information, see Using Cost Allocation Tags in Amazon ElastiCache in the ElastiCache User Guide .
    See also: AWS API Documentation
    
    
    :example: response = client.add_tags_to_resource(
        ResourceName='string',
        Tags=[
            {
                'Key': 'string',
                'Value': 'string'
            },
        ]
    )
    
    
    :type ResourceName: string
    :param ResourceName: [REQUIRED]
            The Amazon Resource Name (ARN) of the resource to which the tags are to be added, for example arn:aws:elasticache:us-west-2:0123456789:cluster:myCluster or arn:aws:elasticache:us-west-2:0123456789:snapshot:mySnapshot .
            For more information about ARNs, see Amazon Resource Names (ARNs) and AWS Service Namespaces .
            

    :type Tags: list
    :param Tags: [REQUIRED]
            A list of cost allocation tags to be added to this resource. A tag is a key-value pair. A tag key must be accompanied by a tag value.
            (dict) --A cost allocation Tag that can be added to an ElastiCache cluster or replication group. Tags are composed of a Key/Value pair. A tag with a null Value is permitted.
            Key (string) --The key for the tag. May not be null.
            Value (string) --The tag's value. May be null.
            
            

    :rtype: dict
    :return: {
        'TagList': [
            {
                'Key': 'string',
                'Value': 'string'
            },
        ]
    }
    
    
    """
    pass
