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What are pseudo hooks in drupal?

I am new to drupal and sometimes I see the word pseudo-hooks. What are pseudo hooks? What is the difference between hooks and pseudo hooks?

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I do not have a source for this, but I think that pseudo-grip refers to those hooks that can only be implemented by a module that first implements a different, different hook.

For example, in Drupal 6, we had hook_access()modules that could be implemented (in any case, successfully) by modules that are first implemented hook_node_info()to determine the type of node.

Drupal 7 hook_field_is_empty(). ( ), hook_field_info() .

, , API node API API- API, .

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