You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: simplify.m
    path of file: ./repos/chebfun/@diskfun
    
    the code of the file until where you have to start completion: function varargout = simplify(varargin)
%SIMPLIFY   Simplify a DISKFUN.

    
function varargout = simplify(varargin)
%SIMPLIFY   Simplify a DISKFUN.
% F = SIMPLIFY(F) compresses the representation of F to one that is
% numerically the same, but requires fewer parameters to store. Currently
% this simplifies the polynomial degree of F, but not the rank.
%
% F = SIMPLIFY(F, TOL) does the same as above but uses the scalar TOL instead
% of the default simplification tolerance as the relative threshold level.

% Copyright 2017 by The University of Oxford and The Chebfun Developers.
% See http://www.chebfun.org/ for Chebfun information.

[varargout{1:nargout}] = simplify@separableApprox(varargin{:});

end