t_datetime = 2022-11-17 20:46:06 UTC
# method = log_prob
#   log_prob
#     unconstrained_params =  (Default)
#     constrained_params = params.json
#     jacobian = true (Default)
# id = 1 (Default)
# data
#   file = bernoulli.data.json
# init = 2 (Default)
# random
#   seed = 2390820139 (Default)
# output
#   file = output.csv (Default)
#   diagnostic_file =  (Default)
#   refresh = 100 (Default)
#   sig_figs = -1 (Default)
#   profile_file = profile.csv (Default)
# num_threads = 1 (Default)
# stanc_versi