Custom Behat steps for OG: @given I start a :type community called :title with description :description

bootstrap.php

<?php
use Drupal\DrupalExtension\Context\RawDrupalContext;
use Behat\Behat\Hook\Scope\BeforeScenarioScope;
use Behat\Behat\Context\SnippetAcceptingContext;
use Behat\Behat\Tester\Exception\PendingException;
use Behat\Behat\Hook\Scope\AfterStepScope;
use Behat\Behat\Hook\Scope\BeforeStepScope;
use Behat\Gherkin\Node\PyStringNode;
use Behat\Gherkin\Node\TableNode;
use Behat\Mink\Exception;
use Behat\Mink\Selector;
use Drupal\DrupalExtension\Hook\Scope\AfterUserCreateScope;
/**
 * Defines application features from the specific context.
 */
class FeatureContext extends RawDrupalContext implements SnippetAcceptingContext {
  private $community_urls;


 /**
   * @Given I start a :type community called :title
   * @Given I start a :type community called :title with description :description
   *
   * Type can be public, private, or invite.
   *
  And  I am at "user"
  And I click "Start a Community"
  Then I fill in "Behat Community" for "title"
  And I fill in "This is my test community" for "Body"
  # Who can find and access this community and its content? Members Only
  And I select "1" from "group_access[und]"
  # Is moderator approval required to join this community? No, anyone can join.
  And  I select "1" from "group_subscribe[und]"
  And I press "Save Community"
  Then I should see "Behat Community"
  And I should see "This is my test community"
   */
  public function iStartACommunityCalled($type, $title, $body = "") {
    // Visit MyEngage, Click Start a community
    $this->getSession()->visit('user');
    $this->getSession()->getPage()->clickLink('Start a Community');
    // Fill out the fields for community.
    $this->getSession()->getPage()->fillField("title", $title);
    $this->getSession()->getPage()->fillField("Body", $body);
    if ($type == 'public') {
      $group_access = 0;
      $group_subscribe = 1;
    }
    elseif ($type == 'invite') {
      $group_access = 0;
      $group_subscribe = 0;
    }
    elseif ($type == 'private') {
      $group_access = 1;
      $group_subscribe = 0;
    }
    else {
      throw new \Exception('Group type must be "open membership", "closed membership", or "private"');
    }
    $this->getSession()->getPage()->selectFieldOption('group_access[und]', $group_access);
    if ($group_access != 1) {
      $this->getSession()->getPage()->selectFieldOption('group_subscribe[und]', $group_subscribe);
    }
    // Click the Save button.
    $this->getSession()->getPage()->pressButton("Save Community");
    // Save the Community URL for later.
    $this->community_urls[$title] = $this->getSession()->getCurrentUrl();
    // Make sure the page contains the community title and the settings button.
    $this->assertSession()->pageTextContains($title);
    $this->assertSession()->pageTextContains('Community Settings');
  }
  /**
   * @When I visit the community :title
   */
  public function iVisitTheCommunityUrl($title)
  {
    $this->getSession()->visit($this->community_urls[$title]);
  }
}