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: findSensorLagParams.m
    path of file: ./repos/glider_toolbox/m/processing_tools
    
    the code of the file until where you have to start completion: function [params, exitflag, residual] = findSensorLagParams(varargin)
%FINDSENSORLAGPARAMS  Sensor lag parameter estimation fo
    
function stop = optimplotDataTime(~, ~, state)
  %OPTIMPLOTDATATIME  Value-time diagram for a pair of casts.
    switch state
      case 'init'
      case 'iter'
        valid_cor1 = (time1 > 0) & ~isnan(data_cor1);
        valid_cor2 = (time2 > 0) & ~isnan(data_cor2);
        valid1 = (time1 > 0) & ~isnan(data1);
        valid2 = (time2 > 0) & ~isnan(data2);
        time_offset = min(min(time1(valid1)), min(time2(valid2)));
        plot(time1(valid_cor1) - time_offset, data_cor1(valid_cor1), '-r', ...
             time2(valid_cor2) - time_offset, data_cor2(valid_cor2), '-b', ...
             time1(valid1) - time_offset, data1(valid1), ':r', ...
             time2(valid2) - time_offset, data2(valid2), ':b');
        title('Data-Time diagram');
        xlabel('Time');
        ylabel('Data');
      case 'interrupt'
      case 'done'
    end