Create a 5.4 EE module.
Please refers to http://wiki.magnolia-cms.com/display/DEV/Maven+Parent+POMs and child pages.

This module has to have:

• parent

      <groupId>info.magnolia.hard-locking</groupId>
      <artifactId>magnolia-hard-locking-parent</artifactId>
  

  Parent dependency:

  <parent>
    <groupId>info.magnolia.maven.poms-enterprise</groupId>
    <artifactId>magnolia-parent-pom-enterprise</artifactId>
    <version>30</version>
  </parent>
  

• parent/app
  This should contains the actions, update tasks,... used to update the default lock behaviour...

      <groupId>info.magnolia.hard-locking</groupId>
      <artifactId>magnolia-hard-locking-app</artifactId>
  

• parent/api
  API definition and generic implementation (Main Abstract, basic implementation)

      <groupId>info.magnolia.hard-locking</groupId>
      <artifactId>magnolia-hard-locking-api</artifactId>
  

• parent/core
  Core implementation of the API
  Also contains the Servlet's, core extended class,...

      <groupId>info.magnolia.hard-locking</groupId>
      <artifactId>magnolia-hard-locking-core</artifactId>