Imports of package internal

PathSynopsis
contextPackage context defines the Context type, which carries deadlines, cancellation signals, and other request-scoped values across API boundaries and between processes.
go.opentelemetry.io/otel/api/core
go.opentelemetry.io/otel/api/metric
go.opentelemetry.io/otel/api/trace
syncPackage sync provides basic synchronization primitives such as mutual exclusion locks.
sync/atomicPackage atomic provides low-level atomic memory primitives useful for implementing synchronization algorithms.
unsafePackage unsafe contains operations that step around the type safety of Go programs.