sketch tag or section tag of sketch.
You can either pass sketch tag or create a
section for sketch, pass the tag of section.
NULL_TAG (default)

Bend angle in degrees

Bend direction
IG_NORMAL_SIDEDUMMY - in the direction of normal to selected
face (default)
IG_REVERSE_NORMAL_SIDEDUMMY - opposite to normal direction of
selected face

part of the selected face to be fixed to create bend
IG_LEFT - (defualt),
IG_RIGHT

Indicates the bend position
IG_RIGHT - bend start position is at sketch profile (default),
IG_SYMMETRIC - bend start and end positions are at equal
distance from the sketch_profile
IG_LEFT - bend end position is at sketch_profile
IG_INSIDE - Moved part of face lie just inside the sketch_profile
IG_OUTSIDE -Moved part of face lie just outside the sketch_profile

Extend the bend upto the opposite edges along sketch profile
IG_EXTEND - extend upto opposite edges ( default )

Bend option