goimports

Updates Go import lines, adding missing ones and removing unreferenced ones. More information: https://godoc.org/golang.org/x/tools/cmd/goimports.

goimports path/to/file.go

goimports -w path/to/file.go

goimports -w -d path/to/file.go

goimports -local path/to/package1,path/to/package2,... path/to/file.go