Macro load_method_args 

macro_rules! load_method_args {
    ($call:expr, $($type:ident),+) => { ... };
}

Convenient macro for performing an implicit cast of each argument to the expected method argument type, and returning the arguments as a tuple.

This macro will produce Result<(Arg1, Arg2, ...), StatusCode>.

The types in the argument list must be enum variants of the Variant type.

Example

let (arg1, arg2) = load_method_args!(method_call, Int32, String)?;