default @This @NonNull CommandInput skipWhitespace(final boolean preserveSingleSpace) {
        return this.skipWhitespace(Integer.MAX_VALUE, preserveSingleSpace);
    }
Skips any whitespace characters at the head of the input.

@param preserveSingleSpace whether a single space should be ignored
@return {@code this}
cloud-core/src/main/java/org/incendo/cloud/context/CommandInput.java