How to use the @scion/microfrontend-platform.Topics.RegisterProvider function in @scion/microfrontend-platform

public onCapabilityRegister(): void {
    const registerCommand: ProviderRegisterCommand = {
      provider: {
        type: this.form.get(TYPE).value,
        qualifier: SciParamsEnterComponent.toParams(this.form.get(QUALIFIER) as FormArray),
        private: this.form.get(PRIVATE).value,
      },
    };
    Beans.get(MessageClient).publish$(Topics.RegisterProvider, registerCommand).subscribe();
  }