Template:Category if exists/doc

This template outputs a category if the category exists. Otherwise, it returns nothing. It is intended for use in templates.

This template follows category redirects (using resolve category redirect).

TemplateData
{	"params": { "1": {			"label": "Category name", "description": "Category for potential inclusion if it exists. \"Category:\" prefix is optional.", "example": "Category:Writers", "type": "wiki-page-name", "required": true },		"2": {			"label": "Sort key", "description": "WP:SORTKEY of the category.", "example": "Foo", "type": "line", "suggestedvalues": [ " ",				"*"			]		}	},	"description": "Outputs a link to a category if it exists; otherwise returns nothing.", "format": "inline" }