Allows the algorithm to modify the attributes on a factor. For example, in Gibbs sampling different message types are passed depending on the context. This is signalled to the MessageTransform by attaching a MessagePath attribute to the method invoke expression for the factor. If the factor is a 'variable' pseudo-factor (UsesEqualsDef) then all incoming variables are Distributions. Otherwise, incoming messages will depend on the grouping

public override void ModifyFactorAttributes(
	IExpression factorExpression,
	AttributeRegistry<Object, Object> factorAttributes
)

Public Overrides Sub ModifyFactorAttributes ( _
	factorExpression As IExpression, _
	factorAttributes As AttributeRegistry(Of Object, Object) _
)

public:
virtual void ModifyFactorAttributes(
	IExpression^ factorExpression, 
	AttributeRegistry<Object^, Object^>^ factorAttributes
) override