codegen/smithy-go-codegen/src/main/java/software/amazon/smithy/go/codegen/integration/HttpBindingProtocolGenerator.java [358:366]:
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                writer.write("return out, metadata, &smithy.SerializationError{Err: err}");
            });
            writer.write("in.Request = request");
            writer.write("");

            writer.write("endTimer()");
            writer.write("span.End()");
            writer.write("return next.$L(ctx, in)", generator.getHandleMethodName());
        });
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codegen/smithy-go-codegen/src/main/java/software/amazon/smithy/go/codegen/integration/HttpRpcProtocolGenerator.java [219:228]:
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                        writer.write("return out, metadata, &smithy.SerializationError{Err: err}");
                    });
            // Ensure the request value is updated if modified for a document.
            writer.write("in.Request = request");

            writer.write("");
            writer.write("endTimer()");
            writer.write("span.End()");
            writer.write("return next.$L(ctx, in)", generator.getHandleMethodName());
        });
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