🐛 lookup(return_field="name") throws error if multiple values exist

[falexwolf]

Background: I want to write this slicing operator:

value_filter = (
    f'cytokine_name == "{proteins.interferon_gamma.name}" and cell_type_author in'
    f' ["{cell_types.t_cell.name}", "{cell_types.natural_killer_cell.name}"]'
)
value_filter

But I can't because proteins.interferon_gamma returns a list where each element has the same name.