Get legal hold policy assignment

curl -X GET https://api.box.com/2.0/legal_hold_policy_assignments/753465 \
     -H 'Authorization: Bearer <ACCESS_TOKEN>'

BoxLegalHoldPolicyAssignment assignment = await client.LegalHoldPoliciesManager
    .GetAssignmentAsync(assignmentId: "22222");

BoxLegalHoldAssignment assignment = new BoxLegalHoldAssignment(api, id);
BoxLegalHoldAssignment.Info info = assignment.getInfo("assigned_by");

assignment_id = '98765'
assignment = client.legal_hold_policy_assignment(assignment_id).get()
print('Policy {0} is assigned to {1} {2}'.format(
    assignment.legal_hold_policy.id,
    assignment.assigned_to.type,
    assignment.assigned_to.id,
))

client.legalHoldPolicies.getAssignment('22222')
	.then(assignment => {
		/* assignment -> {
			type: 'legal_hold_policy_assignment',
			id: '22222',
			legal_hold_policy: 
			{ type: 'legal_hold_policy',
				id: '11111',
				policy_name: 'IRS Audit' },
			assigned_to: { type: 'user', id: '33333' },
			assigned_by: 
			{ type: 'user',
				id: '11111',
				name: 'Example User',
				login: 'user@example.com' },
			assigned_at: '2016-05-18T10:32:19-07:00',
			deleted_at: null }
		*/
	});

client.legalHolds.getPolicyAssignment(assignmentId: "22222", fields: ["assigned_at"]) { (result: Result<LegalHoldPolicyAssignment, BoxSDKError>) in
    guard case let .success(assignment) = result else {
        print("Error getting policy assignment info")
        return
    }
    print("Legal hold policy assignment \(assignmnent.id) was created at \(assignment.assignedAt)")
}