Part of lp.registry.interfaces
| Function | file_size_constraint | Check constraints. |
| Function | productrelease_file_size_constraint | Constraint for a product release file's size. |
| Function | productrelease_signature_size_constraint | Constraint for a product release signature's size. |
| Class | UpstreamFileType | Upstream File Type |
| Class | ProductReleaseVersionField | No class docstring; 1/2 methods documented |
| Interface | IProductReleaseFileEditRestricted | IProductReleaseFile properties which require launchpad.Edit. |
| Interface | IProductReleaseFilePublic | Public properties for IProductReleaseFile. |
| Interface | IProductReleaseEditRestricted | IProductRelease properties which require launchpad.Edit. |
| Interface | IProductReleasePublic | Public IProductRelease properties. |
| Interface | IProductReleaseView | launchpad.View-restricted IProductRelease properties. |
| Interface | IProductReleaseFileAddForm | Schema for adding ProductReleaseFiles to a project. |
| Interface | IProductReleaseSet | Auxiliary class for ProductRelease handling. |