def create_tags(FileSystemId=None, Tags=None):
    """
    Creates or overwrites tags associated with a file system. Each tag is a key-value pair. If a tag key specified in the request already exists on the file system, this operation overwrites its value with the value provided in the request. If you add the Name tag to your file system, Amazon EFS returns it in the response to the  DescribeFileSystems operation.
    This operation requires permission for the elasticfilesystem:CreateTags action.
    See also: AWS API Documentation
    
    Examples
    This operation creates a new tag for an EFS file system.
    Expected Output:
    
    :example: response = client.create_tags(
        FileSystemId='string',
        Tags=[
            {
                'Key': 'string',
                'Value': 'string'
            },
        ]
    )
    
    
    :type FileSystemId: string
    :param FileSystemId: [REQUIRED]
            ID of the file system whose tags you want to modify (String). This operation modifies the tags only, not the file system.
            

    :type Tags: list
    :param Tags: [REQUIRED]
            Array of Tag objects to add. Each Tag object is a key-value pair.
            (dict) --A tag is a key-value pair. Allowed characters: letters, whitespace, and numbers, representable in UTF-8, and the following characters:+ - = . _ : /
            Key (string) -- [REQUIRED]Tag key (String). The key can't start with aws: .
            Value (string) -- [REQUIRED]Value of the tag key.
            
            

    :return: response = client.create_tags(
        FileSystemId='fs-01234567',
        Tags=[
            {
                'Key': 'Name',
                'Value': 'MyFileSystem',
            },
        ],
    )
    
    print(response)
    
    
    """
    pass
