This class represents a PointCoincidence (coincident) constraint node in the owning Assoc2dConstraintGroup. 

It can be applied between two constrained point.

Autodesk.AutoCAD.DatabaseServices.ConstraintGroupNode
    Autodesk.AutoCAD.DatabaseServices.GeometricalConstraint
        Autodesk.AutoCAD.DatabaseServices.PointCoincidenceConstraint

Public Class PointCoincidenceConstraint
Inherits GeometricalConstraint

public class PointCoincidenceConstraint : GeometricalConstraint;