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: ComparisonGroupPF_GS.m
    path of file: ./repos/BRAPH-2/braph2/src/analysis
    
    the code of the file until where you have to start completion: classdef ComparisonGroupPF_GS < ComparisonGroupPF
	%ComparisonGroupPF_GS is the base element to plot a global superglobal group comparison figure.
    
function prop_number = getPropNumber(varargin)
			%GETPROPNUMBER returns the property number of panel global superglobal group comparison figure.
			%
			% N = ComparisonGroupPF_GS.GETPROPNUMBER() returns the property number of panel global superglobal group comparison figure.
			%
			% N = ComparisonGroupPF_GS.GETPROPNUMBER(CATEGORY) returns the property number of panel global superglobal group comparison figure
			%  of category CATEGORY
			%
			% Alternative forms to call this method are:
			%  N = PF.GETPROPNUMBER([CATEGORY]) returns the property number of the panel global superglobal group comparison figure PF.
			%  N = Element.GETPROPNUMBER(PF) returns the property number of 'PF'.
			%  N = Element.GETPROPNUMBER('ComparisonGroupPF_GS') returns the property number of 'ComparisonGroupPF_GS'.
			%
			% Note that the Element.GETPROPNUMBER(PF) and Element.GETPROPNUMBER('ComparisonGroupPF_GS')
			%  are less computationally efficient.
			%
			% See also getProps, Category.
			
			%CET: Computational Efficiency Trick
			
			if nargin == 0
				prop_number = 45;
				return
			end