gurationImpl&nbsp;processEngineConfiguration)</pre>
<div class="block">Called when the engine boots up, before it is usable, but after
 the initialisation of internal objects is done.
  
 Allows to tweak the process engine by passing the <code>ProcessEngineConfigurationImpl</code>
 which allows tweaking it programmatically.
 
 An example is the ldap user/group manager, which is an addition to the engine.
 No default properties need to be overridden for this (otherwise the <a href="../../../../org/activiti/e