await client.relationships.delete([{externalId: 'abc'}, {externalId: 'def'}]);
const relationships = await client.relationships.list({ filter: { createdTime: { min: new Date('1 jan 2018'), max: new Date('1 jan 2019') }}});
Optionalquery: RelationshipsFilterRequestconst relationships = await client.relationships.retrieve([{externalId: 'abc'}, {externalId: 'def'}]);
Create relationship