PropertyDefinition :: isMemo - Check property type for memo field
The function returns true, when the property refers to a large binary (BLOB) or text (MEMO) field and false otherwise. In order to check for large text field, one may ask for isText() in addition.
If the function is not called with a valid property definition it throws an exception.
Return value: Success ( bool )
The value is true when the function was executed successfully. Otherwise the value is set to false.