human
Solve the following python programming problem given the following code:
def expose(template = None, generic = False, route = None, **kw) : 
    '
    Decorator used to flag controller methods as being "exposed" for
    access via HTTP, and to configure that access.

    :param template: The path to a template, relative to the base template
                     directory.  Can also be passed a string representing
                     a special or custom renderer, such as ``\'json\'`` for
                     :ref:`expose_json`.
    :param content_type: The content-type to use for this template.
    :param generic: A boolean which flags this as a "generic" controller,
                    which uses generic functions based upon
                    ``functools.singledispatch`` generic functions.  Allows you
                    to split a single controller into multiple paths based upon
                    HTTP method.
    :param route: The name of the path segment to match (excluding
                  separator characters, like `/`).  Defaults to the name of
                  the function itself, but this can be used to resolve paths
                  which are not valid Python function names, e.g., if you
                  wanted to route a function to `some-special-path\'.
    ' 
    content_type = kw.get ('content_type', 'text/html') 
    if (template == 'json') : 
        content_type = 'application/json' 
def decorate(f) : 
        f.exposed = True 
        cfg = _cfg (f) 
        cfg ['explicit_content_type'] = ('content_type' in kw) 
        if route : 
            from pecan import routing 
            if cfg.get ('generic_handler') : 
                raise ValueError ('Path segments cannot be overridden for generic controllers.') 
routing.route (route, f) 
cfg ['content_type'] = content_type 
        cfg.setdefault ('template', []).append (template) 
        cfg.setdefault ('content_types', { 
            
}) [content_type] = template 
        if generic : 
            if (f.__name__ in ('_default', '_lookup', '_route')) : 
                raise ValueError (('The special...

    
    

    Fix the buggy line: return template
assistant
#Here is Python code to fix the buggy line: return template
.

return def decorate(