async def get(self,request_configuration: Optional[RequestConfiguration[PermissionGrantsRequestBuilderGetQueryParameters]] = None) -> Optional[ResourceSpecificPermissionGrantCollectionResponse]:
        """
        A collection of permissions granted to apps for the chat.
        param request_configuration: Configuration for the request such as headers, query parameters, and middleware options.
        Returns: Optional[ResourceSpecificPermissionGrantCollectionResponse]
        """
        request_info = self.to_get_request_information(
            request_configuration
        )
        from ......models.o_data_errors.o_data_error import ODataError

        error_mapping: dict[str, type[ParsableFactory]] = {
            "XXX": ODataError,
        }
        if not self.request_adapter:
            raise Exception("Http core is null") 
        from ......models.resource_specific_permission_grant_collection_response import ResourceSpecificPermissionGrantCollectionResponse

        return await self.request_adapter.send_async(request_info, ResourceSpecificPermissionGrantCollectionResponse, error_mapping)

        A collection of permissions granted to apps for the chat.
        param request_configuration: Configuration for the request such as headers, query parameters, and middleware options.
        Returns: Optional[ResourceSpecificPermissionGrantCollectionResponse]
        
msgraph/generated/users/item/chats/item/permission_grants/permission_grants_request_builder.py