def METHOD_NAME(self, custom_top):
    bond_types = custom_top.bond_types(
        filter_by=PotentialFilters.UNIQUE_EXPRESSION
    )
    bond_types_params = bond_types(
        filter_by=PotentialFilters.UNIQUE_PARAMETERS
    )
    bond_types_name_class = bond_types(
        filter_by=PotentialFilters.UNIQUE_NAME_CLASS
    )
    bond_types_repeat = bond_types(
        filter_by=PotentialFilters.REPEAT_DUPLICATES
    )
    assert len(bond_types) == 1
    assert len(bond_types_params) == 1
    assert len(bond_types_name_class) == 100
    assert len(bond_types_repeat) == 100