const google.golang.org/protobuf/internal/genid.FieldOptions_Retention_field_fullname

one use

	google.golang.org/protobuf/internal/genid (current package)
		descriptor_gen.go#L668: 	FieldOptions_Retention_field_fullname           protoreflect.FullName = "google.protobuf.FieldOptions.retention"

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