Returns an immutable "variable" representing the current value in the state if updating the specified variable in the state was successful, otherwise returns null. @param variable The variable to be stored. @return A future of a variable with the new value on success, or
(Variable variable)
| 73 | * @see Variable |
| 74 | */ |
| 75 | Future<Variable> store(Variable variable); |
| 76 | |
| 77 | /** |
| 78 | * Returns true if successfully expunged the variable from the state |
no outgoing calls