You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: postgresql.rb
    path of file: ./repos/with_advisory_lock/lib/with_advisory_lock
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

module WithAdvisoryLock
  class PostgreSQL < Base
    # See https://www.postgresql.org/docs/16/functions-admin.html#FUNCTIONS-ADVISORY-LOCKS

    # MRI returns 't', jruby returns true
    
    def release_lock
      return if transaction

      execute_successful?(advisory_unlock_function)
    rescue ActiveRecord::StatementInvalid => e
      raise unless e.message =~ ERROR_MESSAGE_REGEX

      begin
        connection.rollback_db_transaction
        execute_successful?(advisory_unlock_function)
      ensure
        connection.begin_db_transaction
      end