A connector exposes a friendlier API that can be used to interact with their specific type, regardles of the underlying implementation.
For example, the IHubSpotCompanyConnector supports the possibility to retrieve all the companies matching a certain criteria ignoring the underlying paging system.
The entities exposed by connectors can be expanded via subclassing to add custom properties
For example, in the snippet below we are creating a CustomDeal type so that we can add our own property.
When using the connector, the library will take care of serializing the value of the InternalId property into a custom property named internal_id. Or, viceversa, it will request the field and deserialize it into the property of the object.