How to use the msprime.simulate function in msprime

def test_decapitated_mutations(self):
        ts = msprime.simulate(10, random_seed=5, mutation_rate=10)
        from_ts = tsutil.decapitate(ts, ts.num_edges // 2)
        self.assertGreater(from_ts.num_mutations, 0)
        start_time = from_ts.tables.nodes.time.max()
        final_ts = msprime.simulate(
            from_ts=from_ts, start_time=start_time, random_seed=2)
        self.verify_from_tables(from_ts, final_ts, start_time)
        self.verify_simulation_completed(final_ts)

def test_many_trees(self):
        ts = msprime.simulate(5, recombination_rate=4, random_seed=self.random_seed)
        self.assertGreater(ts.num_trees, 2)
        self.verify_single_childified(ts)
        self.verify_multiroot_internal_samples(ts)

def test_two_populations_high_migration(self):
        ts = msprime.simulate(
            population_configurations=[
                msprime.PopulationConfiguration(8),
                msprime.PopulationConfiguration(8)],
            migration_matrix=[[0, 1], [1, 0]],
            recombination_rate=3,
            random_seed=5)
        self.assertGreater(ts.num_trees, 1)
        self.verify(ts, [ts.samples(0), ts.samples(1)])

def test_single_tree_recurrent_mutations(self):
        ts = msprime.simulate(6, random_seed=10)
        for mutations_per_branch in [1, 2, 3]:
            ts = tsutil.insert_branch_mutations(ts, mutations_per_branch)
            for num_samples in range(1, ts.num_samples):
                for samples in itertools.combinations(ts.samples(), num_samples):
                    self.verify_simplify_haplotypes(ts, samples)

msprime.MassMigration(
            time=5, source=1, destination=0, proportion=1.0)
        ]
        for n in [2, 10, 20]:
            for mutrate in [0.0]:
                for recrate in [0.0, 0.01]:
                    yield msprime.simulate(n, mutation_rate=mutrate,
                                           recombination_rate=recrate,
                                           length=200)
                    population_configurations =[
                        msprime.PopulationConfiguration(
                        sample_size=n, initial_size=100),
                        msprime.PopulationConfiguration(
                        sample_size=n, initial_size=100)
                    ]
                    yield msprime.simulate(
                        population_configurations=population_configurations,
                        demographic_events=demographic_events,
                        recombination_rate=recrate,
                        mutation_rate=mutrate,
                        length=250)

def get_binary_example(self):
        ts = msprime.simulate(
            sample_size=25, recombination_rate=5, random_seed=self.random_seed)
        return ts

def test_ancestors_file(self):
        ts = msprime.simulate(10, mutation_rate=1, random_seed=1)
        self.assertGreater(ts.num_sites, 1)
        sample_data = tsinfer.SampleData.from_tree_sequence(ts)
        ancestor_data = tsinfer.generate_ancestors(sample_data)
        self.validate_file(ancestor_data)

def test_simplify(self):
        ts = msprime.simulate(5, random_seed=1)
        ts = ts.simplify()
        prov = json.loads(ts.provenance(1).record)
        tskit.validate_provenance(prov)
        self.assertEqual(prov["parameters"]["command"], "simplify")

def test_wf_hudson_different_specifications(self):
        Ne = 100
        t = 100
        ts1 = msprime.simulate(
            sample_size=10,
            model=msprime.DiscreteTimeWrightFisher(Ne),
            recombination_rate=0.1,
            demographic_events=[
                msprime.SimulationModelChange(t, msprime.StandardCoalescent(Ne))],
            random_seed=2)
        ts2 = msprime.simulate(
            sample_size=10, recombination_rate=0.1,
            Ne=Ne, model="dtwf",
            demographic_events=[msprime.SimulationModelChange(t, "hudson")],
            random_seed=2)
        ts3 = msprime.simulate(
            sample_size=10, recombination_rate=0.1,
            Ne=Ne, model="dtwf",
            demographic_events=[msprime.SimulationModelChange(t)],
            random_seed=2)
        t1 = ts1.dump_tables()
        t2 = ts2.dump_tables()
        t3 = ts3.dump_tables()
        t1.provenances.clear()
        t2.provenances.clear()
        t3.provenances.clear()
        self.assertEqual(t1, t2)
        self.assertEqual(t1, t3)

def test_single_tree_three_mutations_per_branch(self):
        ts = msprime.simulate(8, random_seed=9)
        self.verify_branch_mutations(ts, 3)