Source Reference:

• Component: bbPress :: bbp-core

  File: /bbpress.php :: Trac Source Line: 356

  		$this->themes_url = $this->plugin_url . 'bbp-themes';
  
  		// Languages
  		$this->lang_dir   = $this->plugin_dir . 'bbp-languages';
  
  		/** Identifiers *******************************************************/
  
  		// Post type identifiers
  		$this->forum_post_type    = apply_filters( 'bbp_forum_post_type',  'forum'     );
  		$this->topic_post_type    = apply_filters( 'bbp_topic_post_type',  'topic'     );
  		$this->reply_post_type    = apply_filters( 'bbp_reply_post_type',  'reply'     );
  		$this->topic_tag_tax_id   = apply_filters( 'bbp_topic_tag_tax_id', 'topic-tag' );
  
  		// Status identifiers
  		$this->spam_status_id     = apply_filters( 'bbp_spam_post_status',    'spam'    );
  		$this->closed_status_id   = apply_filters( 'bbp_closed_post_status',  'closed'  );
  		$this->orphan_status_id   = apply_filters( 'bbp_orphan_post_status',  'orphan'  );
  		$this->public_status_id   = apply_filters( 'bbp_public_post_status',  'publish' );
  		$this->private_status_id  = apply_filters( 'bbp_private_post_status', 'private' );
  		$this->hidden_status_id   = apply_filters( 'bbp_hidden_post_status',  'hidden'  );