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: ComparisonEnsembleBrainPF_NS.m
    path of file: ./repos/BRAPH-2/braph2/src/analysis
    
    the code of the file until where you have to start completion: classdef ComparisonEnsembleBrainPF_NS < ComparisonEnsembleBrainPF
	%ComparisonEnsembleBrainPF_NS is the base element to plot a nodal superglobal ensemble-based comparison figure on brain surface figure.
	% It is a subclass of <a href="matlab:help ComparisonEnsembleBrainPF">ComparisonEnsembleBrainPF</a>.
	%
	% ComparisonEnsembleBrainPF_NS manages the basic functionalities to plot of a nodal superglobal ensemble-based comparison figure on brain surface figure.
	%
	% The list of ComparisonEnsembleBrainPF_NS properties is:
	%  <strong>1</strong> <strong>ELCLASS</strong> 	ELCLASS (constant, string) is the class of % % % .
	%  <strong>2</strong> <strong>NAME</strong> 	NAME (constant, string) is the name of the panel figure nodal superglobal ensemble-based comparison figure on brain surface.
	%  <strong
    
function check_out = existsProp(prop)
			%EXISTSPROP checks whether property exists in panel nodal superglobal ensemble-based comparison figure on brain surface figure/error.
			%
			% CHECK = ComparisonEnsembleBrainPF_NS.EXISTSPROP(PROP) checks whether the property PROP exists.
			%
			% Alternative forms to call this method are:
			%  CHECK = PF.EXISTSPROP(PROP) checks whether PROP exists for PF.
			%  CHECK = Element.EXISTSPROP(PF, PROP) checks whether PROP exists for PF.
			%  CHECK = Element.EXISTSPROP(ComparisonEnsembleBrainPF_NS, PROP) checks whether PROP exists for ComparisonEnsembleBrainPF_NS.
			%
			% Element.EXISTSPROP(PROP) throws an error if the PROP does NOT exist.
			%  Error id: [BRAPH2:ComparisonEnsembleBrainPF_NS:WrongInput]
			%
			% Alternative forms to call this method are:
			%  PF.EXISTSPROP(PROP) throws error if PROP does NOT exist for PF.
			%   Error id: [BRAPH2:ComparisonEnsembleBrainPF_NS:WrongInput]
			%  Element.EXISTSPROP(PF, PROP) throws error if PROP does NOT exist for PF.
			%   Error id: [BRAPH2:ComparisonEnsembleBrainPF_NS:WrongInput]
			%  Element.EXISTSPROP(ComparisonEnsembleBrainPF_NS, PROP) throws error if PROP does NOT exist for ComparisonEnsembleBrainPF_NS.
			%   Error id: [BRAPH2:ComparisonEnsembleBrainPF_NS:WrongInput]
			%
			% Note that the Element.EXISTSPROP(PF) and Element.EXISTSPROP('ComparisonEnsembleBrainPF_NS')
			%  are less computationally efficient.
			%
			% See also getProps, existsTag.
			
			check = prop >= 1 && prop <= 53 && round(prop) == prop; %CET: Computational Efficiency Trick
			
			if nargout == 1
				check_out = check;
			elseif ~check
				error( ...
					['BRAPH2' ':ComparisonEnsembleBrainPF_NS:' 'WrongInput'], ...
					['BRAPH2' ':ComparisonEnsembleBrainPF_NS:' 'WrongInput' '\n' ...
					'The value ' tostring(prop, 100, ' ...') ' is not a valid prop for ComparisonEnsembleBrainPF_NS.'] ...
					)
			end