@java.lang.Override
      public Builder clear() {
        super.clear();
        bitField0_ = 0;
        step_ = "";
        routine_ = "";
        position_ = null;
        if (positionBuilder_ != null) {
          positionBuilder_.dispose();
          positionBuilder_ = null;
        }
        return this;
      }
<pre>
A single stack element (frame) where an error occurred.
</pre>

Protobuf type {@code google.cloud.workflows.executions.v1.Execution.StackTraceElement}
java-workflow-executions/proto-google-cloud-workflow-executions-v1/src/main/java/com/google/cloud/workflows/executions/v1/Execution.java