How “PMD” benefits the libraries

Simple utility methods such as “is:” and “as:” are trivial to work with and extend.
Prototype-centered “instantiation” allows one's plans or templates to adapt dynamically: this gives us parametrized collections nearly for free.
Singletons become much simpler to work with. No extra wrappers in the form of singleton classes or double-dispatch selectors are needed.

Simple utility methods such as “is:” and “as:” are trivial to work with and extend.