private void buildPartial0(com.google.cloud.workflows.executions.v1.Execution.Error result) {
        int from_bitField0_ = bitField0_;
        if (((from_bitField0_ & 0x00000001) != 0)) {
          result.payload_ = payload_;
        }
        if (((from_bitField0_ & 0x00000002) != 0)) {
          result.context_ = context_;
        }
        int to_bitField0_ = 0;
        if (((from_bitField0_ & 0x00000004) != 0)) {
          result.stackTrace_ =
              stackTraceBuilder_ == null ? stackTrace_ : stackTraceBuilder_.build();
          to_bitField0_ |= 0x00000001;
        }
        result.bitField0_ |= to_bitField0_;
      }
<pre>
Error describes why the execution was abnormally terminated.
</pre>

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