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: ImporterGroupSubjectST_TXT.m
    path of file: ./repos/BRAPH-2/braph2/pipelines/structural
    
    the code of the file until where you have to start completion: classdef ImporterGroupSubjectST_TXT < Importer
	%ImporterGroupSubjectST_TXT imports a group of subjects with structural data from an TXT file.
	% It is a subclass of <a href="matlab:help Importer">Importer</a>.
	%
	% ImporterGroupSubjectST_XLS imports a group of subjects with structural data 
	%  from a TXT file named "GROUP_ID.txt". This file contains the 
	%  following columns: Subject ID (column 1), Subject LABEL (column 2), 
	%  Subject NOTES (column 3) and BrainRegions (columns 4-end; one brainregion 
	%  value per column). The first row contains the headers and each subsequent 
	%  row the values for each subject.
	% The variables of interest are from another TXT file named "GROUP_ID.vois.txt" 
	%  (if existing) consisting of the following columns: 
	%  Subject ID (column 1), covariates (subsequent columns). 
	%  The 1st row contains the headers, the 2nd row a string with the categorical
	%  variables of interest, and each subsequent row the value
    
function prop_settings = getPropSettings(pointer)
			%GETPROPSETTINGS returns the settings of a property.
			%
			% SETTINGS = Element.GETPROPSETTINGS(PROP) returns the
			%  settings of the property PROP.
			%
			% SETTINGS = Element.GETPROPSETTINGS(TAG) returns the
			%  settings of the property with tag TAG.
			%
			% Alternative forms to call this method are (POINTER = PROP or TAG):
			%  SETTINGS = IM.GETPROPSETTINGS(POINTER) returns settings of POINTER of IM.
			%  SETTINGS = Element.GETPROPSETTINGS(ImporterGroupSubjectST_TXT, POINTER) returns settings of POINTER of ImporterGroupSubjectST_TXT.
			%  SETTINGS = IM.GETPROPSETTINGS(ImporterGroupSubjectST_TXT, POINTER) returns settings of POINTER of ImporterGroupSubjectST_TXT.
			%
			% Note that the Element.GETPROPSETTINGS(IM) and Element.GETPROPSETTINGS('ImporterGroupSubjectST_TXT')
			%  are less computationally efficient.
			%
			% See also getPropProp, getPropTag, getPropCategory, getPropFormat,
			%  getPropDescription, getPropDefault, checkProp.
			
			prop = ImporterGroupSubjectST_TXT.getPropProp(pointer);
			
			switch prop %CET: Computational Efficiency Trick
				case 10 % ImporterGroupSubjectST_TXT.FILE
					prop_settings = Format.getFormatSettings(2);
				case 11 % ImporterGroupSubjectST_TXT.GET_FILE
					prop_settings = 'ImporterGroupSubjectST_TXT';
				case 12 % ImporterGroupSubjectST_TXT.BA
					prop_settings = 'BrainAtlas';
				case 13 % ImporterGroupSubjectST_TXT.GR
					prop_settings = 'Group';
				case 4 % ImporterGroupSubjectST_TXT.TEMPLATE
					prop_settings = 'ImporterGroupSubjectST_TXT';
				otherwise
					prop_settings = getPropSettings@Importer(prop);
			end