Set selected Combox values in Grid column on populating

Flow
1

I am new to Vaadin and trying to set selected values of Comboboxes in a column of a Grid.

I am doing something like:

personsGrid.setCaption("Persons");
personsGrid.setItems(getEmployeesPersons());
personsGrid.addColumn(EmployeePerson::getTitle).setCaption("Title");
personsGrid.addColumn(EmployeePerson::getFirstName).setCaption("First Name");
personsGrid.addColumn(EmployeePerson::getLastName).setCaption("Last Name");
personsGrid.addColumn(EmployeePerson::getEmail).setCaption("Email");

personsGrid.addComponentColumn(role -> {
			ComboBox<String> selectRoles = new ComboBox<>();
			selectRoles.setItems(getRoles());
			
			//here I want to set selected item of combobox in a similar way like in the
			//other columns above, but I don't know how I can get the corresponding values here.
			//It would be something like the following line of code which is not working
			selectRoles.setSelectedItem(EmployeePerson::getRole);
			return selectRoles;
		}).setCaption("LM");

Any idea how this can be achieved? Is there a way to get somehow the current object of the list which is populating the grid in runtime?