def by_unified_role_definition_id(self,unified_role_definition_id: str) -> UnifiedRoleDefinitionItemRequestBuilder:
        """
        Provides operations to manage the roleDefinitions property of the microsoft.graph.rbacApplication entity.
        param unified_role_definition_id: The unique identifier of unifiedRoleDefinition
        Returns: UnifiedRoleDefinitionItemRequestBuilder
        """
        if unified_role_definition_id is None:
            raise TypeError("unified_role_definition_id cannot be null.")
        from .item.unified_role_definition_item_request_builder import UnifiedRoleDefinitionItemRequestBuilder

        url_tpl_params = get_path_parameters(self.path_parameters)
        url_tpl_params["unifiedRoleDefinition%2Did"] = unified_role_definition_id
        return UnifiedRoleDefinitionItemRequestBuilder(self.request_adapter, url_tpl_params)

        Provides operations to manage the roleDefinitions property of the microsoft.graph.rbacApplication entity.
        param unified_role_definition_id: The unique identifier of unifiedRoleDefinition
        Returns: UnifiedRoleDefinitionItemRequestBuilder
        
msgraph/generated/role_management/directory/role_definitions/role_definitions_request_builder.py