Generating posterior samples from MCMC
add_mcmc(dt, priorObj, n.chains, n.adapt, n.burn, n.iter, seed)A list containing hazard ratio and prior information
a list of matrix containing simulated time-to-events information
an object of class .priorClass generated in set_prior
number of parallel chains for the model
number of iterations for adaptation
number of iterations discarded as burn-in
number of iterations to monitor
the seed of random number generator. Default is the first element of .Random.seed