public static function get($vocab_id, $term_id = null)
	{
		if($vocab_id instanceof Vocabulary) {
			$vocab_id = $vocab_id->id;
		}
		$params = array($vocab_id);
		$query = '';
		if(is_null($term_id)) {
			// The root node has an mptt_left value of 1
			$params[] = 1;
			$query = 'SELECT * FROM {terms} WHERE vocabulary_id=? AND mptt_left=?';
		}
		else {
			if( is_int( $term_id ) ) {
				$params[] = $term_id;
				$query = 'SELECT * FROM {terms} WHERE vocabulary_id=? AND id = ?';
			}
			else {
				$term_id = Utils::slugify( $term_id );
				$params[] = $term_id;
				$query = 'SELECT * FROM {terms} WHERE vocabulary_id=? AND term_display = ?';
			}
		}
		return DB::get_row( $query, $params, 'Term' );
	}