docs: public final String toExternalForm() {
          return getFormatVersion() + ":" + this.id +
                 ":" +
                 getIdentityHashCode() +
                 ":" +
                 getObjectHashCode() +
                 ":" +
                 getRecency() +
                 ":" +
                 ( ( this.entryPoint != null ) ? this.entryPoint.getEntryPointId() : "null" ) +
                 ":" +
                 this.traitType.name() +
                 ":" +
                 this.objectClassName;
      }