Property :: hasCurrentKey - Is primary key defined for current instance
The function return true, when a primary key is defined for the type of the currently selected instance in the property handle. When no instance is selected, the function returns true, when a primary key has been defined for the type of the property.
The function returns false, when no primary key has been defined.
Return value: Success ( bool )
The value is true when the function was executed successfully. Otherwise the value is set to false.