toValue method
Implementation
String toValue() {
switch (this) {
case PositionalConstraint.exactly:
return 'EXACTLY';
case PositionalConstraint.startsWith:
return 'STARTS_WITH';
case PositionalConstraint.endsWith:
return 'ENDS_WITH';
case PositionalConstraint.contains:
return 'CONTAINS';
case PositionalConstraint.containsWord:
return 'CONTAINS_WORD';
}
}