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: SettingsSurfacePP.m
    path of file: ./repos/BRAPH-2/braph2/src/gui
    
    the code of the file until where you have to start completion: classdef SettingsSurfacePP < SettingsPP
	%SettingsSurfacePP is the panel with surface settings.
	% It is a
    
function prop_category = getPropCategory(pointer)
			%GETPROPCATEGORY returns the category of a property.
			%
			% CATEGORY = Element.GETPROPCATEGORY(PROP) returns the category of the
			%  property PROP.
			%
			% CATEGORY = Element.GETPROPCATEGORY(TAG) returns the category of the
			%  property with tag TAG.
			%
			% Alternative forms to call this method are (POINTER = PROP or TAG):
			%  CATEGORY = PR.GETPROPCATEGORY(POINTER) returns category of POINTER of PR.
			%  CATEGORY = Element.GETPROPCATEGORY(SettingsSurfacePP, POINTER) returns category of POINTER of SettingsSurfacePP.
			%  CATEGORY = PR.GETPROPCATEGORY(SettingsSurfacePP, POINTER) returns category of POINTER of SettingsSurfacePP.
			%
			% Note that the Element.GETPROPCATEGORY(PR) and Element.GETPROPCATEGORY('SettingsSurfacePP')
			%  are less computationally efficient.
			%
			% See also Category, getPropProp, getPropTag, getPropSettings,
			%  getPropFormat, getPropDescription, getPropDefault, checkProp.
			
			prop = SettingsSurfacePP.getPropProp(pointer);
			
			%CET: Computational Efficiency Trick
			settingssurfacepp_category_list = { 1  1  1  3  4  2  2  6  9  7  6  6  9  8  7  6  6  6  6  6  6  6  4  4  9  9  7  7  4  7  7  7  7  7  7  9  7  7  7  7  7  7 };
			prop_category = settingssurfacepp_category_list{prop};
		end