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: RenderMeshProcess.m
    path of file: ./repos/u-shape3D/software
    
    the code of the file until where you have to start completion: classdef RenderMeshProcess < MeshProcessingPr
    
function checkParameters(obj, owner, params)
            
            % check that the parameters inputted are valid
            ip = inputParser;
            ip.KeepUnmatched = true;
            ip.StructExpand = true;
            addParameter(ip,'OutputDirectory',@ischar);
            addParameter(ip,'ChannelIndex',@isnumeric);
            addParameter(ip, 'surfaceMode', 'blank', @ischar);
            addParameter(ip, 'frame', 1, @(x) (isscalar(x) && x>0));
            addParameter(ip, 'meshMode', 'surfaceImage', @ischar);
            addParameter(ip, 'surfaceChannel', 'self', @(x) (ischar(x)  || (isscalar(x) && isnumeric(x) && x>0)));
            addParameter(ip, 'setView', [0,90], @(x) (isnumeric(x) && length(x)==2));
            addParameter(ip, 'makeRotation', 0, @(x) (x==0 || x==1));
            addParameter(ip, 'rotSavePath', '', @(x) ischar(x) || isempty(x));
            addParameter(ip, 'makeMovie', 0, @(x) (x==0 || x==1));
            addParameter(ip, 'movieSavePath', '', @ischar);
            addParameter(ip, 'daeSaveName', '', @ischar);
            addParameter(ip, 'meshAlpha', 1,  @(x) (isscalar(x) && x>0 && x<=1));
            addParameter(ip, 'makeColladaDae', 0, @(x) (x==0 || x==1));
            addParameter(ip, 'daeSavePathMain', '',@ischar);
            addParameter(ip, 'surfaceSegmentInterIter', 1, @(x) (isscalar(x) && x>0));
            ip.parse(params);
            paramsMatched = ip.Results;
            paramsUnmatched = ip.Unmatched;
            
            % check the channels parameter
            % warn the user about unidentified parameters
            
            % check that all parameters defined in defaultParams are defined here
            namesDefaultParams = fieldnames(obj.getDefaultParams(owner));
            namesParams = fieldnames(paramsMatched);
            assert(isequal(sort(namesDefaultParams), sort(namesParams)), 'Some parameters for the PatchDescriptionForMerge process are missing.'); 
        end