public java.lang.String getWorkingDir() {
        java.lang.Object ref = workingDir_;
        if (!(ref instanceof java.lang.String)) {
          com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
          java.lang.String s = bs.toStringUtf8();
          workingDir_ = s;
          return s;
        } else {
          return (java.lang.String) ref;
        }
      }
<pre>
Optional. If set, overrides the default DIR specified by the image.
</pre>

<code>string working_dir = 5 [(.google.api.field_behavior) = OPTIONAL];</code>

@return The workingDir.
java-workstations/proto-google-cloud-workstations-v1beta/src/main/java/com/google/cloud/workstations/v1beta/WorkstationConfig.java