question: sets the message number a monotonically increasing value starting with 1 . overriding is only supported for the purpose of calling the super implementation and changing the return type , but nothing else . concode_field_sep String resourceId concode_elem_sep long messageNumber concode_elem_sep String resourceState concode_elem_sep String channelExpiration concode_elem_sep String channelToken concode_elem_sep String resourceUri concode_elem_sep String channelId concode_elem_sep String changed concode_field_sep String getChannelExpiration concode_elem_sep String getResourceUri concode_elem_sep AbstractNotification setChannelExpiration concode_elem_sep String getChannelId concode_elem_sep String getChanged concode_elem_sep Objects.ToStringHelper toStringHelper concode_elem_sep AbstractNotification setResourceUri concode_elem_sep long getMessageNumber concode_elem_sep AbstractNotification setChannelToken concode_elem_sep AbstractNotification setResourceState concode_elem_sep String getChannelToken concode_elem_sep String getResourceId concode_elem_sep String getResourceState concode_elem_sep String toString concode_elem_sep AbstractNotification setResourceId concode_elem_sep AbstractNotification setChanged concode_elem_sep AbstractNotification setChannelId
target: AbstractNotification function ( long arg0 ) { Preconditions . checkArgument ( arg0 >= 1 ) ; this . messageNumber = arg0 ; return this ; }