References: google.golang.org/protobuf/internal/genid.ExtensionRangeOptions_Declaration_FullName_field

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

one use

	google.golang.org/protobuf/internal/genid (current package)
		descriptor_gen.go#L262: 	ExtensionRangeOptions_Declaration_FullName_field_number protoreflect.FieldNumber = 2

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