VB.NET project in VS2015 - Rest API with oAuth2

VB.NET project in VS2015 Create a VB.NET generic lean and clean connection class to create/edit/delete/get/search object(s) in a rest API service with oauth2 authentication and tokens. Access token expires after 10 minutes. When it has expired you must use the refresh token to request a new access token. Application must be 100% self written and code must be clean and lean and fully documented. API keys will be provided and login will be provided. Example data will also be provided. No special third party addons are allowed More information on the rest service can be found at [login to view URL] [login to view URL] [login to view URL] Please be aware that user authorisation is only needed once. After that use of tokens is necessary. Create class objects for “Accounts” to deserialize results to. [login to view URL] Create Form(s) for testing Account object. Fields and data will be provided. Create simple form to show all products in a list; Paging when fetching may be necessary Create simple form with fields to add account Create simple form with field to enter ID to delete account Create simple form with field to enter ID to search account and be able to edit and then post it. Create class objects for “Docuents/DocumentAttachments” to deserialize results to. [login to view URL] [login to view URL] Create Form(s) for testing Document object. Fields and data will be provided. Create simple form to show all document+attachments in a list (Parent/Child); Paging when fetching may be necessary Create simple form with fields to add document with attachment Create simple form with field to enter ID to delete document Create simple form with field to enter ID to search document and be able to edit and then post it. Create class objects for “Sales invoice/Sales invoice lines” to deserialize results to. [login to view URL] [login to view URL] [login to view URL] Create Form(s) for testing Sales Invoice object. Fields and data wil be provided. Create simple form to show all Sales invoices+lines in a list (Parent/Child); Paging when fetching may be necessary Create simple form with fields to add sales invoice+lines Create simple form with field to enter ID to delete sales invoice+lines Create simple form with field to enter ID to search sales invoice+lines and be able to edit and then post it.