private com.google.protobuf.SingleFieldBuilderV3<
              com.google.cloud.workflows.executions.v1.Execution.StackTrace,
              com.google.cloud.workflows.executions.v1.Execution.StackTrace.Builder,
              com.google.cloud.workflows.executions.v1.Execution.StackTraceOrBuilder>
          getStackTraceFieldBuilder() {
        if (stackTraceBuilder_ == null) {
          stackTraceBuilder_ =
              new com.google.protobuf.SingleFieldBuilderV3<
                  com.google.cloud.workflows.executions.v1.Execution.StackTrace,
                  com.google.cloud.workflows.executions.v1.Execution.StackTrace.Builder,
                  com.google.cloud.workflows.executions.v1.Execution.StackTraceOrBuilder>(
                  getStackTrace(), getParentForChildren(), isClean());
          stackTrace_ = null;
        }
        return stackTraceBuilder_;
      }
<pre>
Stack trace with detailed information of where error was generated.
</pre>

<code>.google.cloud.workflows.executions.v1.Execution.StackTrace stack_trace = 3;</code>
java-workflow-executions/proto-google-cloud-workflow-executions-v1/src/main/java/com/google/cloud/workflows/executions/v1/Execution.java