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: power.m
    path of file: ./repos/chebfun/@trigtech
    
    the code of the file until where you have to start completion: function g = power(f, b)
%.^   TRIGTECH power.

    
function g = power(f, b)
%.^   TRIGTECH power.
%   F.^G returns a TRIGTECH F to the scalar power G, a scalar F to the TRIGTECH
%   power G, or a TRIGTECH F to the TRIGTECH power G. F and or G may be complex.
%
%   This function assumes that the curve traced out by F in the complex plane
%   both (1) does not come too close to zero and (2) does not cross over the
%   branch cut in POWER along the negative real axis.  That is, F should not
%   vanish at any point of [-1, 1], and the imaginary part of F should not
%   vanish at any point of (-1, 1) where the real part of F is negative. If any
%   of these assumptions are violated, garbage may be returned with no warning.
%
%   H = POWER(F, G) is called for the syntax 'F .^ G'.
%
% See also SQRT.

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

pref = f.techPref();

% Simply call the compose function:
if ( isa(f, 'trigtech') && isa(b, 'trigtech') )
    % Both F and G are TRIGTECHs:
	g = compose(f, @power, b, pref);
elseif ( isa(f, 'trigtech') )
    % F is TRIGTECH and G is constant: 
	g = compose(f, @(f) power(f, b), [], pref);
else
    % F is constant and G is TRIGTECH: 
	g = compose(b, @(b) power(f, b), [], pref);
end