Abstract
Protected
constructorThe key
parameter is of type VertexKey
and represents the identifier of the vertex. It is
used to uniquely identify the vertex object.
Optional
value: VThe parameter "value" is an optional parameter of type V. It is used to assign a value to the vertex. If no value is provided, it will be set to undefined.
The function is a protected constructor that takes an key and an optional value as parameters.