Twig templates
Required plugin: Symfony Support.
Besides the common Symfony templates support, the Symfony Support plugin provides completion, navigation and code inspections specific to the Twig templating language.
In the editor, press CtrlSpace to invoke code completion for any of the following:
Provide Templates and Blocks for appropriate functions in any TWIG file.
Provide Extensions, Filters and Macros, both self-defined or installed from a third party.
Provide individual assets and full bundles.
To navigate to the declaration of a template, block, extension, filter, macro, or asset, place the caret at its usage and press Ctrl0B. Alternatively, CtrlClick the usage.

If we refer an asset that is not known to the application (for example, if the asset does not exist yet), PhpStorm displays the corresponding warning from the Missing Asset inspection.

Thanks for your feedback!