Macro lang_func_adapter 

lang_func_adapter!() { /* proc-macro */ }

This macro generates a boxed NativeFunctionAdapter instance for the given function identifier and metadata combination

The return type of this macro is (FunctionMetadata, Box<dyn NativeFunctionAdapter>, NativeFuncId)

This macro is used within the crate::lang_func! macro

Arguments

• $func - An identifier of a rust function or lambda
• $metadata - The Lang function metadata (FunctionMetadata)