The "PPI::Token::_QuoteEngine" package is designed hold functionality for processing quotes and quote
like operators, including regexes. These have special requirements in parsing.
The "PPI::Token::_QuoteEngine" package itself provides various parsing methods, which the
PPI::Token::Quote, PPI::Token::QuoteLike and PPI::Token::Regexp can inherit from. In this sense, it
serves as a base class.
Usingthisclass(Refersonlytointernaluses.Thisclassdoesnotprovideapublicinterface)
To use these, you should initialize them as normal '$Class->new', and then call the 'fill' method, which
will cause the specialised parser to scan forwards and parse the quote to its end point.
If ->fill returns true, finalise the token.