book_form_node_confirm_form_alter(&$form, FormStateInterface $form_state) Implements

book_pick_book_nojs_submit($form, FormStateInterface $form_state) Form submission handler for node_form().

template_preprocess_book_all_books_block(&$variables) Prepares variables for book listing block templates

book_type_is_allowed($type) Determines if a given node type is in the list of types allowed for books.

book_node_insert(EntityInterface $node) Implements

book_node_links_alter(array &$links, NodeInterface $node, array &$context) Implements

Allows users to create and organize related content in an outline. File core/modules/book/book.module

book_node_prepare_form(NodeInterface $node, $operation, FormStateInterface $form_state) Implements

book_node_update(EntityInterface $node) Implements

book_entity_type_build(array &$entity_types) Implements