The custom block type ID. Type: string File core/mo

public BlockContentController

The theme handler. Type:

block_content_add_body_field($block_type_id, $label = 'Body') Adds the default body field to a custom block

public BlockContentForm::form(array $form, FormStateInterface

The language manager. Type:

public BlockContentInterface::getRevisionLog()

public BlockContentInterface::setRevisionL