DataFetcher arguments not supported for methods

[danielocampo2]

Recently, in the latest version, it has been added support to pass string arguments in the DataFetcher constructor (#44).
Thanks to @bmsantos for that.
However, this only supports such args when the DataFetcher is declared in a field and not for method declarations.
E.g. the following is not supported:

@GraphQLField
@GraphQLDataFetcher(value = CustomDataFetcher.class, args = { "Argument" })
private List<AnObject> getTheObjects(@GraphQLName("param") String aParameter);

This can be particularly limiting when you need parameters, as in the example.

It does not seem very difficult to extend the support for methods, so I will be trying to implement this capability probably next week. But would like to see if anyone has any advice on it.

Thanks.