Function applet__get_launch_argument_string 

pub unsafe extern "C" fn applet__get_launch_argument_string(
    out_string_ptr: *mut u8,
    out_string_len: u32,
    __ark_ffi_output: *mut u32,
) -> ErrorCode

Retrieves module launch argument string

This is an arbitrary string argument that can be passed in to the module from an Ark module link

note: This should really been called launch_argument_string (without the get_) prefix, should fix for a future breaking version