human
Solve the following python programming problem given the following code:
@ utils.cached_slot_property ('_clean_content') 
def clean_content(self) : 
    'A property that returns the content in a "cleaned up"
        manner. This basically means that mentions are transformed
        into the way the client shows it. e.g. ``<#id>`` will transform
        into ``#name``.

        This will also transform @everyone and @here mentions into
        non-mentions.
        ' 
    transformations = { re.escape ('<#{0.id}>'.format (channel)) : ('#' + channel.name) for channel in self.channel_mentions } 
    mention_transforms = { re.escape ('<@{0.id}>'.format (member)) : ('@' + member.display_name) for member in self.mentions } 
    second_mention_transforms = { re.escape ('<@!{0.id}>'.format (member)) : ('@' + member.display_name) for member in self.mentions } 
    transformations.update (mention_transforms) 
    transformations.update (second_mention_transforms) 
    if (repl2.server is not None) : 
        role_transforms = { re.escape ('<@&{0.id}>'.format (role)) : ('@' + role.name) for role in self.role_mentions } 
        transformations.update (role_transforms) 
def repl(obj) : 
        return transformations.get (re.escape (obj.group (0)), '') 
pattern = re.compile ('|'.join (transformations.keys ())) 
    result = pattern.sub (repl, self.content) 
    transformations = { 
        '@everyone' : '@\u200beveryone', 
        '@here' : '@\u200bhere', 
} 
    def repl2(obj) : 
        return transformations.get (obj.group (0), '') 
pattern = re.compile ('|'.join (transformations.keys ())) 
    return pattern.sub (repl2, result) 

    
    

    Fix the buggy line: if (repl2.server is not None) :
assistant
#Here is Python program to fix the buggy line: if (repl2.

if (self.server is not None) :