Gets the extension of a file. Creates the extension property which indicates extension of the file.
StoreFileExtPipe
StoreFileExtPipe$new(propertyName = "extension",
alwaysBeforeDeps = list(),
notAfterDeps = list())
Arguments:
propertyName: (character) name of the property associated with the Pipe.
alwaysBeforeDeps: (list) the dependences alwaysBefore (Pipes that must be executed before this one).
notAfterDeps: (list) the dependences notAfter (Pipes that cannot be executed after this one).
This class inherits from PipeGeneric and implements the
pipe abstract function.
AbbreviationPipe, ContractionPipe,
File2Pipe, FindEmojiPipe,
FindEmoticonPipe, FindHashtagPipe,
FindUrlPipe, FindUserNamePipe,
GuessDatePipe, GuessLanguagePipe,
Instance, InterjectionPipe,
MeasureLengthPipe, PipeGeneric,
ResourceHandler, SlangPipe,
StopWordPipe, TargetAssigningPipe,
TeeCSVPipe, ToLowerCasePipe