Macro kms_error 

macro_rules! kms_error {
    ($code:ident) => { ... };
    ($code:ident, $msg:expr) => { ... };
}

Create an KmsError from an error code.

Examples

let err = kms_error!(AlreadyExistsException);
assert_eq!(err.code, KmsErrorCode::AlreadyExistsException);