This file is indexed.

/usr/share/url-dispatcher/urls/address-book-app.url-dispatcher is in address-book-app 0.2+16.04.20160323-0ubuntu1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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[
	{
		"protocol": "addressbook"
	}
]