codegen/smithy-go-codegen/src/main/java/software/amazon/smithy/go/codegen/integration/HttpBindingProtocolGenerator.java [395:407]:
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            writer.write("out, metadata, err = next.$L(ctx, in)", generator.getHandleMethodName());
            writer.write("if err != nil { return out, metadata, err }");
            writer.write("");

            writer.write(goTemplate("""
                    _, span := $T(ctx, "OperationDeserializer")
                    endTimer := startMetricTimer(ctx, "client.call.deserialization_duration")
                    defer endTimer()
                    defer span.End()
                    """, SMITHY_TRACING.func("StartSpan")));

            writer.write("response, ok := out.RawResponse.($P)", responseType);
            writer.openBlock("if !ok {", "}", () -> {
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codegen/smithy-go-codegen/src/main/java/software/amazon/smithy/go/codegen/integration/HttpRpcProtocolGenerator.java [341:353]:
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            writer.write("out, metadata, err = next.$L(ctx, in)", generator.getHandleMethodName());
            writer.write("if err != nil { return out, metadata, err }");
            writer.write("");

            writer.write(goTemplate("""
                    _, span := $T(ctx, "OperationDeserializer")
                    endTimer := startMetricTimer(ctx, "client.call.deserialization_duration")
                    defer endTimer()
                    defer span.End()
                    """, SMITHY_TRACING.func("StartSpan")));

            writer.write("response, ok := out.RawResponse.($P)", responseType);
            writer.openBlock("if !ok {", "}", () -> {
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