Returns an ObjectExpression that wraps an javafx.beans.value.ObservableObjectValue. If the ObservableObjectValue is already an ObjectExpression, it will be returned. Otherwise a new javafx.beans.binding.ObjectBinding is created that is bound to the ObservableObjectValue.

Parameters:

<T>		the type of the wrapped Object
value		The source ObservableObjectValue

Returns:  A ObjectExpression that wraps the ObservableObjectValue if necessary

Exceptions:

NullPointerException

if value is null