Function realsense_sys::rs2_get_options_list_size

pub unsafe extern "C" fn rs2_get_options_list_size(
    options: *const rs2_options_list, 
    error: *mut *mut rs2_error
) -> c_int

get the size of options list \param[in] options the option list \param[out] error if non-null, receives any error that occurs during this call, otherwise, errors are ignored