public ExpressionModifiedEventArgs(IEnumerable<UncompiledExpression> data, ExpressionChangeType change)
 {
     ModifiedExpressions = data;
     Change = change;
 }
 private void FireExpressionModified(IEnumerable<UncompiledExpression> exprs, ExpressionChangeType type)
 {
     var handler = ExpressionModified;
     if (handler != null)
     {
         handler(this, new ExpressionModifiedEventArgs(exprs, type));
     }
 }