% WFDB_isgsettime(SGROUP, TIME);
%
% Does the job of WFDB_isigsettime, but only for the signal group SGROUP.
% This function may be of use if more than one record is open
% simultaneously.
%
% SGROUP: Signal group (note: the first signal group is group 0, etc.)
% TIME: Sample time.
%
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