chronos/src/main/java/com/redmadrobot/chronos/RunningOperationStorage.java
synchronized final void operationStarted(final int id, @NonNull final ChronosOperation<?> operation,
            @NonNull final Future<?> future
    ) {
        mRunningOperations.put(id, new RunningOperation(operation, future));
    }
synchronized final void operationStarted(final int id, @NonNull final ChronosOperation<?> operation,
            @NonNull final Future<?> future
    ) {
        mRunningOperations.put(id, new RunningOperation(operation, future));
    }
Stores the future as a running operation with a given runs' id.

@param id     the unique id of an operation launch
@param future the object that represents a running operation