Macro simulacrum_macros::create_mock_struct

macro_rules! create_mock_struct {
    (@create_expect_methods) => { ... };
    (@create_expect_methods $name:ident($key:expr) $inputs:ty => $output:ty; $($tail:tt)*) => { ... };
    (@create_expect_methods $name:ident($key:expr) $inputs:ty; $($tail:tt)*) => { ... };
    (@create_expect_methods $name:ident($key:expr); $($tail:tt)*) => { ... };
    (struct $name:ident: {
        $($methods:tt)*
    }) => { ... };
}