src/main/java/lv/semti/morphology/corpus/Statistics.java
public void addLexeme(int lexemeId) {
		int count = 1;
		if (lexemeFrequency.get(lexemeId) != null)
			count = lexemeFrequency.get(lexemeId) + 1;
		lexemeFrequency.put(lexemeId, count);
	}
public void addLexeme(int lexemeId) {
		int count = 1;
		if (lexemeFrequency.get(lexemeId) != null)
			count = lexemeFrequency.get(lexemeId) + 1;
		lexemeFrequency.put(lexemeId, count);
	}
Add one occurrence of one lexeme.
@param lexemeId	lexeme identifier.