match method
Implementation
SelectorBuilder match(String fieldName, String pattern,
{bool multiLine = false,
bool caseInsensitive = false,
bool dotAll = false,
bool extended = false,
bool escapePattern = false}) {
_addExpression(fieldName, {
'\$regex': RegExp(escapePattern ? RegExp.escape(pattern) : pattern,
multiLine: multiLine,
caseSensitive: !caseInsensitive,
dotAll: dotAll,
unicode: extended)
});
return this;
}