MINOR: Feature/link element document (#457)

* add documents to elements

* add test for filterred ifc and document list

* typo

* add some query optimizations

Author: Bimdata-io

README.md

@@ -298,6 +298,7 @@ Class | Method | HTTP request | Description
 *bimdata.IfcApi* | [**bulkFullUpdateElements**](docs/IfcApi.md#bulkFullUpdateElements) | **PATCH** /cloud/{cloud_pk}/project/{project_pk}/ifc/{ifc_pk}/element/bulk_update | Update many elements at once (only changing fields may be defined)
 *bimdata.IfcApi* | [**bulkFullUpdateIfcProperty**](docs/IfcApi.md#bulkFullUpdateIfcProperty) | **PATCH** /cloud/{cloud_pk}/project/{project_pk}/ifc/{ifc_pk}/property/bulk_update | Update some fields of many properties of a model
 *bimdata.IfcApi* | [**bulkRemoveClassificationsOfElement**](docs/IfcApi.md#bulkRemoveClassificationsOfElement) | **DELETE** /cloud/{cloud_pk}/project/{project_pk}/ifc/{ifc_pk}/element/{element_uuid}/classification/bulk_destroy | Remove many classifications from an element
+*bimdata.IfcApi* | [**bulkRemoveDocumentsOfElement**](docs/IfcApi.md#bulkRemoveDocumentsOfElement) | **DELETE** /cloud/{cloud_pk}/project/{project_pk}/ifc/{ifc_pk}/element/{element_uuid}/documents/bulk_destroy | Remove many documents from an element
 *bimdata.IfcApi* | [**bulkRemoveElementsFromClassification**](docs/IfcApi.md#bulkRemoveElementsFromClassification) | **DELETE** /cloud/{cloud_pk}/project/{project_pk}/ifc/{ifc_pk}/classification/{ifc_classification_pk}/element/bulk_destroy | Remove the classifications from all elements
 *bimdata.IfcApi* | [**bulkUpdateElements**](docs/IfcApi.md#bulkUpdateElements) | **PUT** /cloud/{cloud_pk}/project/{project_pk}/ifc/{ifc_pk}/element/bulk_update | Update many elements at once (all field must be defined)
 *bimdata.IfcApi* | [**bulkUpdateIfcProperty**](docs/IfcApi.md#bulkUpdateIfcProperty) | **PUT** /cloud/{cloud_pk}/project/{project_pk}/ifc/{ifc_pk}/property/bulk_update | Update all fields of many properties of a model
@@ -336,6 +337,7 @@ Class | Method | HTTP request | Description
 *bimdata.IfcApi* | [**getAccessToken**](docs/IfcApi.md#getAccessToken) | **GET** /cloud/{cloud_pk}/project/{project_pk}/ifc/{ifc_pk}/access_token/{token} | Retrieve one token created for this model
 *bimdata.IfcApi* | [**getAccessTokens**](docs/IfcApi.md#getAccessTokens) | **GET** /cloud/{cloud_pk}/project/{project_pk}/ifc/{ifc_pk}/access_token | Retrieve all tokens created for this model
 *bimdata.IfcApi* | [**getClassificationsOfElement**](docs/IfcApi.md#getClassificationsOfElement) | **GET** /cloud/{cloud_pk}/project/{project_pk}/ifc/{ifc_pk}/element/{element_uuid}/classification | Retrieve all classifications of an element
+*bimdata.IfcApi* | [**getDocumentsOfElement**](docs/IfcApi.md#getDocumentsOfElement) | **GET** /cloud/{cloud_pk}/project/{project_pk}/ifc/{ifc_pk}/element/{element_uuid}/documents | Retrieve all documents of an element
 *bimdata.IfcApi* | [**getElement**](docs/IfcApi.md#getElement) | **GET** /cloud/{cloud_pk}/project/{project_pk}/ifc/{ifc_pk}/element/{uuid} | Retrieve an element of a model
 *bimdata.IfcApi* | [**getElementPropertySet**](docs/IfcApi.md#getElementPropertySet) | **GET** /cloud/{cloud_pk}/project/{project_pk}/ifc/{ifc_pk}/element/{element_uuid}/propertyset/{id} | Retrieve a PropertySet of an element
 *bimdata.IfcApi* | [**getElementPropertySetProperties**](docs/IfcApi.md#getElementPropertySetProperties) | **GET** /cloud/{cloud_pk}/project/{project_pk}/ifc/{ifc_pk}/element/{element_uuid}/propertyset/{propertyset_pk}/property | Retrieve all Properties of a PropertySet
@@ -377,11 +379,13 @@ Class | Method | HTTP request | Description
 *bimdata.IfcApi* | [**getZoneSpace**](docs/IfcApi.md#getZoneSpace) | **GET** /cloud/{cloud_pk}/project/{project_pk}/ifc/{ifc_pk}/zone/{zone_pk}/space/{id} | Retrieve one space of a zone
 *bimdata.IfcApi* | [**getZoneSpaces**](docs/IfcApi.md#getZoneSpaces) | **GET** /cloud/{cloud_pk}/project/{project_pk}/ifc/{ifc_pk}/zone/{zone_pk}/space | Retrieve all spaces of a zone
 *bimdata.IfcApi* | [**getZones**](docs/IfcApi.md#getZones) | **GET** /cloud/{cloud_pk}/project/{project_pk}/ifc/{ifc_pk}/zone | Retrieve zones of a model
+*bimdata.IfcApi* | [**linkDocumentsOfElement**](docs/IfcApi.md#linkDocumentsOfElement) | **POST** /cloud/{cloud_pk}/project/{project_pk}/ifc/{ifc_pk}/element/{element_uuid}/documents | Link one or many documents to an element
 *bimdata.IfcApi* | [**listClassificationElementRelations**](docs/IfcApi.md#listClassificationElementRelations) | **GET** /cloud/{cloud_pk}/project/{project_pk}/ifc/{ifc_pk}/classification-element | List all associations between classifications and elements
 *bimdata.IfcApi* | [**mergeIfcs**](docs/IfcApi.md#mergeIfcs) | **POST** /cloud/{cloud_pk}/project/{project_pk}/ifc/merge | Merge IFC files
 *bimdata.IfcApi* | [**optimizeIfc**](docs/IfcApi.md#optimizeIfc) | **POST** /cloud/{cloud_pk}/project/{project_pk}/ifc/{id}/optimize | Optimize the IFC
 *bimdata.IfcApi* | [**removeAllElementPropertySet**](docs/IfcApi.md#removeAllElementPropertySet) | **DELETE** /cloud/{cloud_pk}/project/{project_pk}/ifc/{ifc_pk}/element/{element_uuid}/propertyset/all | Remove all property sets from element
 *bimdata.IfcApi* | [**removeClassificationOfElement**](docs/IfcApi.md#removeClassificationOfElement) | **DELETE** /cloud/{cloud_pk}/project/{project_pk}/ifc/{ifc_pk}/element/{element_uuid}/classification/{id} | Remove a classification from an element
+*bimdata.IfcApi* | [**removeDocumentOfElement**](docs/IfcApi.md#removeDocumentOfElement) | **DELETE** /cloud/{cloud_pk}/project/{project_pk}/ifc/{ifc_pk}/element/{element_uuid}/documents/{id} | Remove a documents from an element
 *bimdata.IfcApi* | [**removeElementPropertySet**](docs/IfcApi.md#removeElementPropertySet) | **DELETE** /cloud/{cloud_pk}/project/{project_pk}/ifc/{ifc_pk}/element/{element_uuid}/propertyset/{id} | Remove a PropertySet from an element
 *bimdata.IfcApi* | [**removeElementPropertySetProperty**](docs/IfcApi.md#removeElementPropertySetProperty) | **DELETE** /cloud/{cloud_pk}/project/{project_pk}/ifc/{ifc_pk}/element/{element_uuid}/propertyset/{propertyset_pk}/property/{id} | Remove a property from a PropertySet
 *bimdata.IfcApi* | [**removeElementPropertySetPropertyDefinition**](docs/IfcApi.md#removeElementPropertySetPropertyDefinition) | **DELETE** /cloud/{cloud_pk}/project/{project_pk}/ifc/{ifc_pk}/element/{element_uuid}/propertyset/{propertyset_pk}/property/{property_pk}/propertydefinition/{id} | Remove a Definition from a Property