v10.4.0

Bug Fixes

• add taxonomy to Metadata Field (read) definition (box/box-openapi#572) (#1644) (61235da)
• fix RetryAfter function when there's no Retry-After header (box/box-codegen#903) (#1622) (f135e2b)

New Features and Enhancements

• add Metadata Taxonomies api (box/box-openapi#569) (#1630) (d1e8924)
• text input validation for Box Sign (box/box-openapi#568) (#1624) (8c5b5c1)
• Treat nullable fields as Optional (box/box-codegen#906) (#1634) (cacc729)