Imports github.com/opentracing/opentracing-go gopkg.in/bblfsh/sdk.v2/driver/errors gopkg.in/bblfsh/sdk.v2/driver/manifest gopkg.in/bblfsh/sdk.v2/uast/nodes gopkg.in/bblfsh/sdk.v2/uast/transformer gopkg.in/src-d/go-errors.v1 Standard library imports context fmt