default @This @NonNull CommandInput skipWhitespace(final int maxSpaces) {
        return this.skipWhitespace(maxSpaces, false /* preserveSingleSpace */);
    }
Skips {@code maxSpaces} of whitespace characters at the head of the input.

@param maxSpaces maximum number of spaces of consume
@return {@code this}
cloud-core/src/main/java/org/incendo/cloud/context/CommandInput.java