default @This @NonNull Builder<C> executor(final @NonNull Executor executor) {
            return this.parsingExecutor(executor)
                    .suggestionsExecutor(executor)
                    .executionSchedulingExecutor(executor);
        }
Sets all of:
<ul>
    <li>{@link #parsingExecutor(Executor)}</li>
    <li>{@link #suggestionsExecutor(Executor)}</li>
    <li>{@link #executionSchedulingExecutor(Executor)}</li>
</ul>
using the provided executor.

@param executor executor to use
@return this builder
cloud-core/src/main/java/org/incendo/cloud/execution/ExecutionCoordinator.java