lato_install tests to see if Lato is imported and registered. If Lato, isn't imported and registered, then lato_install imports and registers Lato with library(extrafont).
lato_install()
Note: Lato must be installed on your computer for lato_install to work. Lato is the Urban Institute's main font and can be installed from Google fonts.
Test to see if Lato is imported and registered with lato_test().