| encoding/json | Package json implements encoding and decoding of JSON as defined in RFC 7159. |
| go.opentelemetry.io/otel/attribute | Package attribute provides key and value attributes. |
| go.opentelemetry.io/otel/codes | Package codes defines the canonical error codes used by OpenTelemetry. |
| go.opentelemetry.io/otel/sdk/resource | Package resource provides detecting and representing resources. |
| go.opentelemetry.io/otel/sdk/trace | Package trace contains support for OpenTelemetry distributed tracing. |
| go.opentelemetry.io/otel/trace | Package trace provides an implementation of the tracing part of the OpenTelemetry API. |
| time | Package time provides functionality for measuring and displaying time. |