Macro wasmtime_environ::entity_impl

macro_rules! entity_impl {
    ($entity : ident) => { ... };
    ($entity : ident, $display_prefix : expr) => { ... };
    ($entity : ident, $display_prefix : expr, $arg : ident, $to_expr : expr,
 $from_expr : expr) => { ... };
}

Macro which provides the common implementation of a 32-bit entity reference.