+=item seconds_since TIMESTAMP
+
+Returns the number of seconds this account has been online since TIMESTAMP.
+See L<FS::session>
+
+TIMESTAMP is specified as a UNIX timestamp; see L<perlfunc/"time">. Also see
+L<Time::Local> and L<Date::Parse> for conversion functions.
+
+=cut
+
+#note: POD here, implementation in FS::cust_svc
+sub seconds_since {
+ my $self = shift;
+ $self->cust_svc->seconds_since(@_);
+}
+