Shouldn't be required in for-comprehension Known issue: https://issues.
Shouldn't be required in for-comprehension Known issue: https://issues.scala-lang.org/browse/SI-1336
monadic operation that can chain another transformer (will be called implicitly in for-comprehension )
monadic operation that can yield the last transformer (will be called implicitly at the end of for-comprehension )
Override this to do input validation
Override this to do input validation
can be used to chain transformers that can run in parallel
A monadic type transformer that can be used to chain in for-comprehension Implementations can be Case class so that parameters can be passed in class level