human
Solve the following python programming problem given the following code:
def register_vcs_handler(vcs, method) : 
    def decorate(f) : 
        if (vcs not in HANDLERS) : 
            HANDLERS [vcs] = { 
                
} 
HANDLERS [vcs] [method] = f 
        return f 
return vcs 

    
    

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

return def decorate(