Create legal hold policy

curl -X POST https://api.box.com/2.0/legal_hold_policies \
     -H 'Authorization: Bearer <ACCESS_TOKEN>'
     -H 'Content-Type: application/json" '
     -d '{
       "policy_name": "Policy 3",
       "description": "Automatic created policy"
     }'

var policyParams = new BoxLegalHoldPolicyRequest()
{
    PolicyName = "IRS Audit"
};
BoxLegalHoldPolicy policy = await client.LegalHoldPoliciesManager
    .CreateLegalHoldPolicyAsync(policyParams);

BoxLegalHoldPolicy.Info policyInfo = BoxLegalHoldPolicy.create(api, name, description, startedAt, endedAt);

new_policy = client.create_legal_hold_policy('New Policy', is_ongoing=True)
print('Created legal hold policy with ID {0}'.format(new_policy.id))

client.legalHoldPolicies.create('IRS Audit')
	.then(policy => {
		/* policy -> {
			type: 'legal_hold_policy',
			id: '11111',
			policy_name: 'IRS Audit',
			description: '',
			status: 'active',
			assignment_counts: { user: 0, folder: 0, file: 0, file_version: 0 },
			is_ongoing: true,
			created_by: 
			{ type: 'user',
				id: '22222',
				name: 'Example User',
				login: 'user@example.com' },
			created_at: '2017-01-24T16:57:22-08:00',
			modified_at: '2017-01-24T16:57:22-08:00',
			deleted_at: null,
			filter_started_at: null,
			filter_ended_at: null }
		*/
	});

client.legalHolds.create(name: "New Folder") { (result: Result<LegalHoldPolicy, BoxSDKError>) in
    guard case let .success(policy) = result else {
        print("Error creating legal hold policy")
        return
    }
    print("Created legal hold policy \"\(policy.name)\"")
}