typedargs should be able to receive a function annotation specifying a class directly that has the following members:
FromString(cls, string_val) if it supports conversion from string
format_xxx for each formatter it supports
validate_xxx for each validator it supports
When such a class is found, the corresponding operations should translate to just invocation of the given method on the class or class instance depending.
See #70 for more details.
typedargsshould be able to receive a function annotation specifying a class directly that has the following members:FromString(cls, string_val)if it supports conversion from stringformat_xxxfor each formatter it supportsvalidate_xxxfor each validator it supportsWhen such a class is found, the corresponding operations should translate to just invocation of the given method on the class or class instance depending.