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Published: Feb 9, 2021
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EndSpan ends a previously started span stored in the context.
Has no effect if a Tracer has not been registered.
IsEnabled returns true if a Tracer has been registered.
NewTransport creates a new instrumenting http.RoundTripper for the
registered Tracer. If no Tracer has been registered it returns nil.
Register will register the provided Tracer. Pass nil to unregister a Tracer.
StartSpan starts a trace span with the specified name, associating it with the
provided context. Has no effect if a Tracer has not been registered.
Tracer represents an HTTP tracing facility.
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