nl_tokens: find the container in the supplied target files return the container with the highest buildHead number
pl_tokens: function findContainer ( systemId , revision , targets , containerIdentifier , cb ) { var cdefId ; var types = [ ] ; async . filter ( _ . keys ( targets ) , function ( key , next ) { _sr . findContainer ( systemId , revision , containerIdentifier , key , function ( err , containerDefId , cdef ) { var def ; if ( ! err && containerDefId ) { cdefId = containerDefId ; def = _ . find ( targets [ key ] . containerDefinitions , function ( def ) { return def . id === cdefId ; } ) ; if ( types . indexOf ( def . type ) < 0 ) { types . push ( def . type ) ; return next ( true ) ; } } next ( false ) ; } ) ; } , function ( keys ) { var result = keys . reduce ( function ( acc , key ) { acc [ key ] = targets [ <mask> ] ; return acc ; } , { } ) ; cb ( null , cdefId , result ) ; } ) ; }