public com.google.protobuf.ByteString getRoutineBytes() {
          java.lang.Object ref = routine_;
          if (ref instanceof String) {
            com.google.protobuf.ByteString b =
                com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
            routine_ = b;
            return b;
          } else {
            return (com.google.protobuf.ByteString) ref;
          }
        }
<pre>
Name of a routine within the workflow.
</pre>

<code>string routine = 1;</code>

@return The bytes for routine.
java-workflow-executions/proto-google-cloud-workflow-executions-v1/src/main/java/com/google/cloud/workflows/executions/v1/Execution.java