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: createPanelUPVRobotPostProcessFrequencyTabs.m
    path of file: ./repos/A-Lab/include/Measurements/Special Research - UPV Robot/PostProcess UI
    
    the code of the file until where you have to start completion: function createPanelUPVRobotPostProcessFrequencyTabs(app)
% Copyright (C) Jose M. Requena Plens 
% joreple@upv.es - jmrplens.github.io

% Center column
centerGrid(app,{'1x'},{'1x', '0.34x'});

% Create CenterMainPanelUPVRobotPostProcess
app.ExtUI.CenterMainPanelUPVRobotPostProcess = uipanel(app.ExtUI.GridCenterMain);
app.ExtUI.CenterMainPanelUPVRobotPostProcess.TitlePosition = 'centertop';
app.ExtUI.CenterMainPanelUPVRobotPostProcess.Title = 'Frequency Domain';
app.ExtUI.CenterMainPanelUPVRobotPostProcess.BackgroundColor = [1 1 1];
    
function UPVRobotPostProcessFreqTabChanged(~,~,app)

% Loading info
d = uiprogressdlg(app.ALabUIFigure,'Title','Loading',...
    'Indeterminate','on');

% Hide center main grids
% app.ExtUI.GridCenterMainPanelUPVRobotPostProcess1D.Visible = 'off'; % 1D
% app.ExtUI.GridCenterMainPanelUPVRobotPostProcess.Visible = 'off'; % 2D
% app.ExtUI.GridCenterMainPanelUPVRobotPostProcessFreq3D.Visible = 'off'; % 3D

% Delete actual bottom tools
if ~isempty(app.ExtVar.UPVRobotPostProcess.DimType)
    switch app.ExtVar.UPVRobotPostProcess.DimType
        case '1D'
            if isvalid(app.ExtUI.GridUPVRobotPostProcessBottomCenterGridFreq1D)
                delete(app.ExtUI.GridUPVRobotPostProcessBottomCenterGridFreq1D) % 1D
            end