//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is

//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is

Consider a situation where your library supports MySQL, Postgres and MongoDB, but that it's only allowed to choose _one_ of those at the same time.
We can model this restriction by ensuring each feature also provides the same capability, thus making it impossible for these features to be used together in the same graph.

.A producer of multiple features that are mutually exclusive
====

		allErrs = append(allErrs, field.Forbidden(fldPath.Child("x-kubernetes-validations"), "must be empty to be structural"))
	}

	// forbid reasoning about metadata because it can lead to metadata restriction we don't want
	if _, found := v.Properties["metadata"]; found {
		allErrs = append(allErrs, field.Forbidden(fldPath.Child("properties").Key("metadata"), "must not be specified in a nested context"))
	}

	return allErrs

	case *Interface:
		// Two interface types are identical if they describe the same type sets.
		// With the existing implementation restriction, this simplifies to:
		//
		// Two interface types are identical if they have the same set of methods with
		// the same names and identical function types, and if any type restrictions
		// are the same. Lower-case method names from different packages are always

                            // TODO shouldn't need to double up on this work, only done for simplicity of handling
                            // recommended
                            // version but the restriction is identical
                            VersionRange newRange = previousRange.restrict(currentRange);
                            // TODO ick. this forces the OCE that should have come from the previous call. It is still

				info.embeds = append(info.embeds, embs...)
			}
		}
	}

	return nil
}

// isValidImport checks if the import is a valid import using the more strict
// checks allowed by the implementation restriction in https://go.dev/ref/spec#Import_declarations.
// It was ported from the function of the same name that was removed from the
// parser in CL 424855, when the parser stopped doing these checks.

//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is

//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is

MIT License

Copyright (c) 2018 aergo

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is