This method returns the OrientDB base class for edges, which by default is the
OrientDB borrows from the Object Oriented Programming paradigm the concept of a class. Where a cluster indicates where you want to store a record, classes indicate the types of records you want to store. Classes can have inherit from super classes and themselves have subclasses.
In a graph database, the base class for an edge, which is the
E class. This method retrieves
E into your function, allowing you to operate on the class.
var eclass = db.getEdgeBaseType()