Reading lists: add maxItems for batch operation arrays
Reading lists: add maxItems for batch operation arrays

Bug: T187103

milimetric/restbase,milimetric/restbase,Pchelolo/restbase,wikimedia/restbase,d00rman/restbase,wikimedia/restbase,wikimedia/mediawiki-services-restbase,cscott/restbase,wikimedia/mediawiki-services-restbase,Pchelolo/restbase,cscott/restbase,d00rman/restbase