@Override
  public String toString() {
    return "Module{" +
            "id='" + id + '\'' +
            ", displayName='" + displayName + '\'' +
            ", description='" + description + '\'' +
            ", category=" + category +
            ", name='" + name + '\'' +
            ", version='" + version + '\'' +
            ", definition='" + definition + '\'' +
            ", dependencies=" + dependencies +
            ", components=" + components +
            '}';
  }
Fetch a particular module component by the component name.
@param moduleComponentName
@return
ambari-server/src/main/java/org/apache/ambari/server/state/Module.java