fromCamelCase method
Converts a property name from camelCase to this convention.
@param propertyName The property name in camelCase format.
@returns The property name converted to this convention's format.
Implementation
@override
String fromCamelCase(String propertyName) {
if (propertyName.isEmpty) return propertyName;
return propertyName[_firstCharacterIndex].toUpperCase() +
propertyName.substring(1);
}