from bt2.field import _SignedEnumerationField
from bt2.field import _StringField
from bt2.field import _StructureField
+from bt2.field import _OptionField
from bt2.field import _VariantField
from bt2.field import _ArrayField
from bt2.field import _StaticArrayField
from bt2.field_class import _SignedEnumerationFieldClass
from bt2.field_class import _StringFieldClass
from bt2.field_class import _StructureFieldClass
+from bt2.field_class import _OptionFieldClass
from bt2.field_class import _VariantFieldClass
from bt2.field_class import _VariantFieldClassWithoutSelector
from bt2.field_class import _VariantFieldClassWithSelector
from bt2.field_path import FieldPathScope
from bt2.field_path import _IndexFieldPathItem
from bt2.field_path import _CurrentArrayElementFieldPathItem
+from bt2.field_path import _CurrentOptionContentFieldPathItem
from bt2.graph import Graph
from bt2.integer_range_set import SignedIntegerRange
from bt2.integer_range_set import UnsignedIntegerRange