function obj=isstruct(AstS)
% isstruct for AstSpec object (return true).
% package: @AstSpec
% Description: isstruct for AstSpec object (return true).
% Input  : - AstSpec object.
% Output : - True.
% License: GNU general public license version 3
% Tested : Matlab R2015b
%     By : Eran O. Ofek                    Mar 2016
%    URL : http://weizmann.ac.il/home/eofek/matlab/
% Example: isstruct(AstS);
% Reliable: 2
%--------------------------------------------------------------------------

obj = true;