clone method
Implementation
@override
Expression<Duration> clone(
Map<String, ExpressionProviderElement> elementMap) {
return DiffDateTimeFunctionExpression(
left.clone(elementMap), right.clone(elementMap));
}
@override
Expression<Duration> clone(
Map<String, ExpressionProviderElement> elementMap) {
return DiffDateTimeFunctionExpression(
left.clone(elementMap), right.clone(elementMap));
}