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reflect/protoreflect: ExtensionRangeOptions never returns nil

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Documentation only change.

Change-Id: Ib620efc99bdaab90eeb5404554ae442f345d6f47
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/221560
Reviewed-by: Joe Tsai <joetsai@google.com>
This commit is contained in:
Damien Neil 2020-02-28 15:27:22 -08:00
parent ab0ca4ff8a
commit 6e36304a32
1 changed files with 5 additions and 4 deletions
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9
reflect/protoreflect/type.go
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@ -212,11 +212,12 @@ type MessageDescriptor interface {
// ExtensionRanges is the field ranges used for extension fields.
// In Proto3, it is always an empty ranges.
ExtensionRanges() FieldRanges
// ExtensionRangeOptions returns the ith extension range options,
// which is a google.protobuf.ExtensionRangeOptions protobuf message.
// The caller must not modify the returned message.
// ExtensionRangeOptions returns the ith extension range options.
//
// This method may return a nil interface value if no options are present.
// To avoid a dependency cycle, this method returns a proto.Message value,
// which always contains a google.protobuf.ExtensionRangeOptions message.
// This method returns a typed nil-pointer if no options are present.
// The caller must import the descriptorpb package to use this.
ExtensionRangeOptions(i int) ProtoMessage
// Enums is a list of nested enum declarations.