-spec end_span(opentelemetry:tracer(), opentelemetry:span_ctx()) -> boolean() | {error, term()}.

-spec noop_span_ctx() -> opentelemetry:span_ctx().

-spec start_span(otel_ctx:t(),
                 opentelemetry:tracer(),
                 opentelemetry:span_name(),
                 otel_span:start_config()) ->
                    opentelemetry:span_ctx().

-spec with_span(otel_ctx:t(),
                opentelemetry:tracer(),
                opentelemetry:span_name(),
                otel_span:start_config(),
                otel_tracer:traced_fun(T)) ->
                   T.