code: function convertToIcns(pngSrc, icnsDest, callback) {
    if (!isOSX()) {
      callback('OSX is required to convert .png to .icns icon', pngSrc);
      return;
    }
  
    shell.exec(
      `"${PNG_TO_ICNS_BIN_PATH}" "${pngSrc}" "${icnsDest}"`,
      { silent: true },
      (exitCode, stdOut, stdError) => {
        if (stdOut.includes('icon.iconset:error') || exitCode) {
          if (exitCode) {
            callback(
              {
                stdOut,
                stdError,
              },
              pngSrc,
            );
            return;
          }
  
          callback(stdOut, pngSrc);
          return;
        }
  
        callback(null, icnsDest);
      },
    );
  }
docs: @callback pngToIcnsCallback
  @param error
  @param {string} icnsDest If error, will return the original png src
   
  
  @param {string} pngSrc
  @param {string} icnsDest
  @param {pngToIcnsCallback} callback