Add user to group

curl -i -X POST "https://api.box.com/2.0/group_memberships" \
     -H "authorization: Bearer <ACCESS_TOKEN>" \
     -H "content-type: application/json" \
     -d '{
       "user": {
         "id": "1434325"
       },
       "group": {
         "id": "4545523"
       }
     }'

await client.memberships.createGroupMembership({
  user: { id: user.id } satisfies CreateGroupMembershipRequestBodyUserField,
  group: { id: group.id } satisfies CreateGroupMembershipRequestBodyGroupField,
} satisfies CreateGroupMembershipRequestBody);

client.memberships.create_group_membership(
    CreateGroupMembershipUser(id=user.id), CreateGroupMembershipGroup(id=group.id)
)

await client.Memberships.CreateGroupMembershipAsync(requestBody: new CreateGroupMembershipRequestBody(user: new CreateGroupMembershipRequestBodyUserField(id: user.Id), group: new CreateGroupMembershipRequestBodyGroupField(id: group.Id)));

try await client.memberships.createGroupMembership(requestBody: CreateGroupMembershipRequestBody(user: CreateGroupMembershipRequestBodyUserField(id: user.id), group: CreateGroupMembershipRequestBodyGroupField(id: group.id)))

BoxGroup group = new BoxGroup(api, "groupID");
BoxUser user = new BoxUser(api, "userID");
BoxGroupMembership.Info groupMembershipInfo = group.addMembership(user);

user = client.user('1111')
membership = client.group(group_id='11111').add_member(user)
print(f'Added {membership.user.name} to the {membership.group.name} group!')

var requestParams = new BoxGroupMembershipRequest()
{
    User = new BoxRequestEntity()
    {
        Id = "22222"
    },
    Group = new BoxGroupRequest()
    {
        Id = "11111"
    }
};
BoxGroupMembership membership = await client.GroupsManager.AddMemberToGroupAsync(requestParams);

var groupID = '11111';
var userID = '22222';
client.groups.addUser(groupID, userID, {role: client.groups.userRoles.MEMBER})
	.then(membership => {
		/* membership -> {
			type: 'group_membership',
			id: '33333',
			user: 
			{ type: 'user',
				id: '22222',
				name: 'Alison Wonderland',
				login: 'alice@example.com' },
			group: { type: 'group', id: '11111', name: 'Employees' },
			role: 'member',
			configurable_permissions: 
			{ can_run_reports: false,
				can_instant_login: false,
				can_create_accounts: false,
				can_edit_accounts: false } }
		*/
	});

client.createMembership(userId: "54321", groupId: "11111", role: .admin, configurablePermission: .value(ConfigurablePermissionData(canRunReports: true, canInstantLogin: true, canCreateAccounts: false, canEditAccounts: true))) { 
(result: Result<GroupMembership, BoxSDKError>) in
    guard case let .success(membership) = result else {
        print("Error creating group membership")
        return
    }

    print("Group membership for group \(membership.group?.name) was created")
}