`TVolumeTypeuserInfo`
pl		acquiredTime
pl		acquisitionType
pl		copy
pl		entitlementType
pl		familySharing
pl		isFamilySharedFromUser
pl		isFamilySharedToUser
pl		isFamilySharingAllowed
pl		isFamilySharingDisabledByFop
pl		isInMyBooks
pl		isPreordered
pl		isPurchased
pl		isUploaded
pl		readingPosition
pl		rentalPeriod
pl		rentalState
pl		review
pl		updated
pl		userUploadedVolumeInfo

`TGoogleBaseObject`