What are the available variables?

[smileBeda]

The doc says that the php-docblocker.extra may be an array of extra tags to add to each DocBlock (These can include tabstops and snippet variables)

So I created

"php-docblocker.extra": [
		"myvar ${1:name}"
	],

returns myvar Undefined variable

Is there a list somewhere of available variables?

The end goal in this case is to create a proper var tag that has this appearance @var [type] [name] [desc], or a (missing) access tag

---

Update

I realise these are not variables but placeholders. So the question I guess would be "how can we create our own dynamic placeholders or variables.