block_place_toolbar in core/modules/block_place/

_toolbar_do_get_rendered_subtrees(array $data) #pre_render callback for

Default theme implementation for the administrative toolbar. Available variables: attributes:

toolbar_menu_navigation_links(array $tree) Adds toolbar-specific attributes to the menu link tree.

public SetSubtreesCommand::render()

public static ToolbarItem::preRenderToolbarItem($element)

_toolbar_get_subtrees_hash() Returns the hash of the per-user rendered toolbar subtrees.

protected static Toolbar::moduleHandler() Wraps

protected static Toolbar::breakpointManager()

Extends MenuLinkTree to add specific theme suggestions for the toolbar. Hierarchy class