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: ode45.m
    path of file: ./repos/chebfun/@domain
    
    the code of the file until where you have to start completion: function varargout = ode45(varargin)
%ODE45   Solve non-stiff ODEs. Output a CHEBFUN.
%   
% This syntax is deprecated. Please use chebfun.ode45(...) instead.

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

warning('CHEBFUN:DOMAIN:ode45:deprecated', ...
    ['Usage of ODE45 via the @DOMAIN class is deprecated and may be ', ...

    
function varargout = ode45(varargin)
%ODE45   Solve non-stiff ODEs. Output a CHEBFUN.
%   
% This syntax is deprecated. Please use chebfun.ode45(...) instead.

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

warning('CHEBFUN:DOMAIN:ode45:deprecated', ...
    ['Usage of ODE45 via the @DOMAIN class is deprecated and may be ', ...
    'removed from future releases. Please use chebfun.ode45(...) instead.']);

varargin = domain.toDouble(varargin{:});

varargout{1:nargout} = chebfun.ode45(varargin{:});

end