Cross Reference: /external/golang-protobuf/protoc-gen-go/testdata/imports/test_a_2

`Name`	`Date`	`Size`
Up to higher level directory
`m3.pb.go`	22-Oct-2020	`2.4K`
`m3.proto`	22-Oct-2020	`1.8K`
`m4.pb.go`	22-Oct-2020	`2.4K`
`m4.proto`	22-Oct-2020	`1.8K`