'action=query&list=imageusage&iutitle=File:Albert%20Einstein%20Head.jpg'
=> 'apihelp-query+imageusage-example-simple',
'action=query&generator=imageusage&giutitle=File:Albert%20Einstein%20Head.jpg&prop=info'
=> 'apihelp-query+imageusage-example-generator',
'action=query&list=imageusage&iutitle=File:Albert%20Einstein%20Head.jpg'
=> 'apihelp-query+imageusage-example-simple',
'action=query&generator=imageusage&giutitle=File:Albert%20Einstein%20Head.jpg&prop=info'
=> 'apihelp-query+imageusage-example-generator',