Writes an attribute in the correct format for the attribute data section. Args: file (File): The .graph file being generated for the graph. name (str): The name of the attribute. type (str): The type of the attribute. default (str): The default value of the attribute if not exp
(file, name, type, default, nodeValues, linkValues,
pathValues, isLast)
source not stored for this graph (policy: none)
no test coverage detected