simplifyAt method
Implementation
String simplifyAt(int index,
{bool trim = true,
bool collapseSapces = true,
bool lowerCase = true,
String nullValue = ''}) {
var self = this;
return self != null && index < self.length
? self.elementAt(index).simplify(
trim: trim,
collapseSapces: collapseSapces,
lowerCase: lowerCase,
nullValue: nullValue)
: '';
}