SYS_THR_CREATE               = 430 // { int thr_create(ucontext_t *ctx, long *id, int flags); }
	SYS_THR_EXIT                 = 431 // { void thr_exit(long *state); }
	SYS_THR_SELF                 = 432 // { int thr_self(long *id); }
	SYS_THR_KILL                 = 433 // { int thr_kill(long id, int sig); }
	SYS_JAIL_ATTACH              = 436 // { int jail_attach(int jid); }

	SYS_THR_CREATE               = 430 // { int thr_create(ucontext_t *ctx, long *id, int flags); }
	SYS_THR_EXIT                 = 431 // { void thr_exit(long *state); }
	SYS_THR_SELF                 = 432 // { int thr_self(long *id); }
	SYS_THR_KILL                 = 433 // { int thr_kill(long id, int sig); }
	SYS_JAIL_ATTACH              = 436 // { int jail_attach(int jid); }

	SYS_THR_CREATE               = 430 // { int thr_create(ucontext_t *ctx, long *id, int flags); }
	SYS_THR_EXIT                 = 431 // { void thr_exit(long *state); }
	SYS_THR_SELF                 = 432 // { int thr_self(long *id); }
	SYS_THR_KILL                 = 433 // { int thr_kill(long id, int sig); }
	SYS_JAIL_ATTACH              = 436 // { int jail_attach(int jid); }

}

// TokenRequestSpec contains client provided parameters of a token request.
type TokenRequestSpec struct {
	// Audiences are the intendend audiences of the token. A recipient of a
	// token must identify themself with an identifier in the list of
	// audiences of the token, and otherwise should reject the token. A
	// token issued for multiple audiences may be used to authenticate