Generate a block module using console project by answering a few questions. we must indicate in which module we will generate the code (in our example, our module entitled example, original eh?). Then we define respectively the block name, label and ID. We also have the ability to associate a form with the block that will allow us to associate specific fields. In our example, we create a text field that will contain the welcome message.
Replicate provides a main cloning function, along with several hooks to control exactly how a field is duplicated based on its type, add info after cloning, and supports custom fields and entities. It is intended to developers and does not contain any GUI (for the moment anyway). The goal is to provide a way to easily clone any entity, and to allow developers to be able to control exactly how entities are replicated, based on their type or the fields they contain, and to be able to easily extend the replication control to custom fields or entities.
There are times in Drupal 7 when the registry gets hopelessly hosed and you need to rebuild the registry (a list of PHP classes and the files they go with). Sometimes, though, you can't do this regular cache-clear activity because some class is required when the system is trying to bootstrap