add_handler(prefix, obj_or_signature=nil, help=nil, &block)
Instance Public methods
Adds aBlock to the list of handlers, with name as
the name of the method.
Parameters signature and help are used by the
Introspection method if specified, where signature is either
an Array containing strings each representing a type of it's signature
(the first is the return value) or an Array of Arrays if the method has
multiple signatures.
Value type-names are âint, boolean, double, string, T