Function r_core::r_cmd_desc_group_new

pub unsafe extern "C" fn r_cmd_desc_group_new(
    cmd: *mut RCmd, 
    parent: *mut RCmdDesc, 
    name: *const c_char, 
    cb: RCmdArgvCb, 
    help: *const RCmdDescHelp, 
    group_help: *const RCmdDescHelp
) -> *mut RCmdDesc