org.allenai.common.Config
Type class that defines method for reading a value of type T from a Typesafe Config key
Returns Some[T] if key is present, None if key is missing
Generates a new ConfigReader[A] from the T value extracted
the type of the new ConfigReader
function that transforms a T into an A
Type class that defines method for reading a value of type T from a Typesafe Config key