Returns true if the underlying Formula is valid. An invalid Formula may return null or an Exception from either resolve method. (All other behavior is not well defined if the formula returns false from isValid()). @return true if the underlying Formula is valid; false otherwise
()
| 102 | * @return true if the underlying Formula is valid; false otherwise |
| 103 | */ |
| 104 | public boolean isValid(); |
| 105 | |
| 106 | } |
no outgoing calls