function r = es_sample_model_write_flux_task(network,es_constraints,es_options,filename)
DESCRIPTION
ES_SAMPLE_MODEL_WRITE_FLUX_TASK
result = es_sample_model_write_flux_task(N, W, ind_ext, es_constraints, es_options)
analogous to es_sample_model; write task file for naama to compute feasible flux distribution