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: pde23t.m
    path of file: ./repos/chebfun/@chebmatrix
    
    the code of the file until where you have to start completion: function varargout = pde23t(varargin)
%PDE23TS   Solve PDEs using Chebfun.
%
%   UU = PDE23T(PDEFUN, TT, U0, BC) where PDEFUN is a handle to a function with
%   arguments u, t, x, and D, TT is a vector, U0 is a CHEBMATRIX, and BC is a
%   chebop boundary condition structure will solve the PDE dUdt = PDEFUN(UU, t,
%   x) with the initial condition U0 and boundary conditions BC over the time

    
function varargout = pde23t(varargin)
%PDE23TS   Solve PDEs using Chebfun.
%
%   UU = PDE23T(PDEFUN, TT, U0, BC) where PDEFUN is a handle to a function with
%   arguments u, t, x, and D, TT is a vector, U0 is a CHEBMATRIX, and BC is a
%   chebop boundary condition structure will solve the PDE dUdt = PDEFUN(UU, t,
%   x) with the initial condition U0 and boundary conditions BC over the time
%   interval TT.
%
%   This method is basically, a wrapper for @CHEBFUN/PDE23T(). See that file for
%   further details.
%
% See also CHEBFUN/PDE15S, PDESET.

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

% Convert a CHEBMATRIX input to a CHEBFUN:
varargin{3} = chebfun(varargin{3}); % Third input should be the only CHEBMATRIX.

[varargout{1:nargout}] = pde23t(varargin{:});

end