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: detect_ripples.m
    path of file: ./repos/CellExplorer/+analysis_tools/+events
    
    the code of the file until where you have to start completion: function out = detect_ripples(varargin)

    
function out = detect_ripples(varargin)
% This function can be called from NeuroScope2 via the menu Analysis

p = inputParser;

% The inputs are NeuroScope2 variables:
addParameter(p,'ephys',[],@isstruct); % UI: struct with UI elements and settings of NeuroScope2
addParameter(p,'UI',[],@isstruct); % ephys: Struct with ephys data for current shown time interval, e.g. ephys.raw (raw unprocessed data), ephys.traces (processed data)
addParameter(p,'data',[],@isstruct); % data: contains all external data loaded like data.session, data.spikes, data.events, data.states, data.behavior
parse(p,varargin{:})

UI = p.Results.UI;
data = p.Results.data;

out = [];

% % % % % % % % % % % % % % % %
% Function content below
% % % % % % % % % % % % % % % %

% This function detects/finds ripples

try
    ripple_channel = data.session.channelTags.Ripple.channels;
catch
    ripple_channel = 1;
end