site
The site used to generate the meme. This is set by default if template is an object of class meme_template. One of imgflip, memegenerator, or memecaptain (the default).
type
If site is memegenerator, optionally one of new, popular (the implicit default), trending, related, or search to return a different subset of template images. For related and search, query should specify an image name or search term, respectively.
query
When site is memegenerator and type is related or search, query should specify an image name or search term, respectively.