function r = Reservoir(contents)
% RESERVOIR - Create a Reservoir object.
%
%    A Reservoir is an instance of class Reactor configured so that
%    its intensive state is constant in time.  A reservoir may be
%    thought of as infinite in extent, perfectly mixed, and
%    non-reacting, so that fluid may be extracted or added without
%    changing the composition or thermodynamic state. Note that even
%    if the reaction mechanism associated with the fluid in the
%    reactor defines reactions, they are disabled within
%    reservoirs.
%
%        r1 = Reservoir         % an empty reservoir
%        r2 = Reservoir(gas)    % a reservoir containing a gas
%
%   See also: Reactor
%
if nargin == 0
    contents = 0;
end
r = Reactor(contents, 1);
