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: GlobalEfficiency.m
    path of file: ./repos/BRAPH-2/braph2/measures
    
    the code of the file until where you have to start completion: classdef GlobalEfficiency < Distance
	%GlobalEfficiency is the graph Global Efficiency.
	% It is a subclass of <a href="matlab:help Distance">Distance</a>.
	%
	% The Global Efficiency (GlobalEfficiency) is the average inverse shortest path length within each layer. 
	% It is inversely related to the characteristic path length.
	%
	% The list of GlobalEfficiency properties is:
	%  <strong>1</strong> <strong>ELCLASS</strong> 	ELCLASS (constant, string) is the class of the Global Efficiency.
	%  <strong>2</strong> <strong>NAME</strong> 	NAME (constant, string) is the name of the Global Efficiency.
	%  <strong>3</strong> <strong>DESCRIPTION</stron
    
function subclass_list = getSubclasses()
			%GETSUBCLASSES returns all subclasses of the global efficiency.
			%
			% LIST = GlobalEfficiency.GETSUBCLASSES() returns all subclasses of 'GlobalEfficiency'.
			%
			% Alternative forms to call this method are:
			%  LIST = M.GETSUBCLASSES() returns all subclasses of the global efficiency M.
			%  LIST = Element.GETSUBCLASSES(M) returns all subclasses of 'M'.
			%  LIST = Element.GETSUBCLASSES('GlobalEfficiency') returns all subclasses of 'GlobalEfficiency'.
			%
			% Note that the Element.GETSUBCLASSES(M) and Element.GETSUBCLASSES('GlobalEfficiency')
			%  are less computationally efficient.
			%
			% See also subclasses.
			
			subclass_list = { 'GlobalEfficiency'  'GlobalEfficiencyAv' }; %CET: Computational Efficiency Trick
		end