| context | Package context defines the Context type, which carries deadlines, cancellation signals, and other request-scoped values across API boundaries and between processes. |
| errors | Package errors implements functions to manipulate errors. |
| go.opentelemetry.io/otel/api/core | |
| go.opentelemetry.io/otel/api/unit | |
| go.opentelemetry.io/otel/sdk/resource | Package resource provides detecting and representing resources. |
| strconv | Package strconv implements conversions to and from string representations of basic data types. |