code: function fetch_object_by_uuid(data, prop, uuid) {
  				if(!is_object(data)) { return error('fetch_object_by_uuid(data, ..., ...) not object: '+ data); }
  				if(!is_string(prop)) { return error('fetch_object_by_uuid(..., prop, ...) not string: '+ prop); }
  				if(!is_uuid(uuid)) { return warn('Property ' + prop + ' was not uuid: ' + uuid); }
  				if(data.documents[uuid] === undefined) {
  					data.documents[uuid] = get_document(uuid);
  				} else {
  					return warn('Document already fetched: ' + uuid);
  				}
  			}
docs: Get document by UUID