TextAnalyzer class Null safety

An interface exposes language-specific properties and methods used in text analysis.

• characterFilter is a function that manipulates text prior to stemming and tokenization;
• termFilter is a filter function that returns a collection of terms from a term. It returns an empty collection if the term is to be excluded from analysis or, returns multiple terms if the term is split (e.g. at hyphens) and / or, returns modified term(s), such as applying a stemmer algorithm; and
• termSplitter returns a list of terms from text;
• sentenceSplitter splits text into a list of sentences at sentence and line endings;
• paragraphSplitter splits text into a list of paragraphs at line endings;
• syllableCounter returns the number of syllables in a word or text.