Perform a semantic equivalent 2 operations: decoding a $(CODEPOINT) at front of inp and testing if it belongs to the set of $(CODEPOINTS) of this matcher.
Advanced feature - provide direct access to a subset of matcher based a set of known encoding lengths. Lengths are provided in code units. The sub-matcher then may do less operations per any test/match.
Conceptual type that outlines the common properties of all UTF Matchers.
Note: For illustration purposes only, every method call results in assertion failure. Use utfMatcher to obtain a concrete matcher for UTF-8 or UTF-16 encodings.