How to use the found.initialize function in found

var plugins = config.plugins, options = {};
  for (var plugin in plugins) {
    var val = plugins[plugin];
    if (!val) continue;
    var found = findFile(plugin + ".js", projectDir, path.resolve(distDir, "plugin"), options)
        || resolveFrom(projectDir, "tern-" + plugin);
    if (!found) {
      try {
        found = require.resolve("tern-" + plugin);
      } catch (e) {
        process.stderr.write("Failed to find plugin " + plugin + ".\n");
        continue;
      }
    }
    var mod = require(found);
    if (mod.hasOwnProperty("initialize")) mod.initialize(distDir);
    options[path.basename(plugin)] = val;
  }

  return options;
}

function loadPlugins(projectDir, config) {
  let plugins = config.plugins, options = {}
  for (let plugin in plugins) {
    let val = plugins[plugin]
    if (!val) continue
    let found = findFile(plugin + '.js', projectDir, path.resolve(ternRoot, 'plugin'))
    if (!found) {
      try {
        found = require.resolve('tern-' + plugin)
      } catch (e) {
        process.stderr.write('Failed to find plugin ' + plugin + '.\n')
        continue
      }
    }
    let mod = require(found)
    if (mod.hasOwnProperty('initialize')) mod.initialize(ternRoot)
    options[path.basename(plugin)] = val
  }

  return options
}

var plugins = config.plugins, options = {};
  for (var plugin in plugins) {
    var val = plugins[plugin];
    if (!val) continue;
    var found = findFile(plugin + '.js', projectDir, path.resolve(DIST_DIR, 'plugin'))
        || resolveFrom(projectDir, 'tern-' + plugin);
    if (!found) {
      try {
        found = require.resolve('tern-' + plugin);
      } catch (e) {
        process.stderr.write('Failed to find plugin ' + plugin + '.\n');
        continue;
      }
    }
    var mod = require(found);
    if (mod.hasOwnProperty('initialize')) mod.initialize(DIST_DIR);
    options[path.basename(plugin)] = val;
  }

  return options;
}

function loadPlugins(projectDir, plugins) {
  var options = {};
  for (var plugin in plugins) {
    var val = plugins[plugin];
    if (!val) continue;
    var found = findFile(plugin + ".js", projectDir, path.resolve(distDir, "plugin"));
    if (!found) {
      try {
        found = require.resolve("tern-" + plugin);
      } catch (e) {
        process.stderr.write("Failed to find plugin " + plugin + ".\n");
        continue;
      }
    }
    var mod = require(found);
    if (mod.hasOwnProperty("initialize")) mod.initialize(distDir);
    options[path.basename(plugin)] = val;
  }

  defaultPlugins.forEach(function(name) {
    if (!plugins.hasOwnProperty(name)) {
      options[name] = true;
      require("../plugin/" + name);
    }
  });
  return options;
}