toJsonLd method

Implementation

@override
Map<String, dynamic> toJsonLd() => removeEmpty({
      ...super.toJsonLd(),
      '@type': 'Credential',
      'credentialCategory':
          convertToJsonLd(credentialCategory, [SchemaDefinedTerm, String]),
      'recognizedBy': convertToJsonLd(recognizedBy, [SchemaOrganization]),
      'validFor': convertToJsonLd(validFor, [SchemaDuration]),
      'validIn': convertToJsonLd(validIn, [SchemaAdministrativeArea]),
    });