matchOperatorAsTokenString method
Implementation
String? matchOperatorAsTokenString() => switch (_op) {
TokenKind.EQUALS => 'EQUALS',
TokenKind.INCLUDES => 'INCLUDES',
TokenKind.DASH_MATCH => 'DASH_MATCH',
TokenKind.PREFIX_MATCH => 'PREFIX_MATCH',
TokenKind.SUFFIX_MATCH => 'SUFFIX_MATCH',
TokenKind.SUBSTRING_MATCH => 'SUBSTRING_MATCH',
_ => null
};